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<PAGE> PAGE 10
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<PAGE> PAGE 12
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<PAGE> PAGE 13
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<PAGE> PAGE 15
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<PAGE> PAGE 16
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<PAGE> PAGE 19
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<PAGE> PAGE 20
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<PAGE> PAGE 21
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<PAGE> PAGE 22
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<PAGE> PAGE 23
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<PAGE> PAGE 24
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<PAGE> PAGE 25
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<PAGE> PAGE 26
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<PAGE> PAGE 27
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<PAGE> PAGE 28
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<PAGE> PAGE 29
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<PAGE> PAGE 30
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<PAGE> PAGE 31
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<PAGE> PAGE 32
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<PAGE> PAGE 33
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<PAGE> PAGE 34
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<PAGE> PAGE 35
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<PAGE> PAGE 36
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<PAGE> PAGE 37
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<PAGE> PAGE 38
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<PAGE> PAGE 39
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<PAGE> PAGE 40
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<PAGE> PAGE 41
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<PAGE> PAGE 42
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<PAGE> PAGE 43
062 G001200 0.0
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<PAGE> PAGE 44
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<PAGE> PAGE 45
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<PAGE> PAGE 46
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<PAGE> PAGE 47
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<PAGE> PAGE 48
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<PAGE> PAGE 49
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<PAGE> PAGE 50
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<PAGE> PAGE 51
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<PAGE> PAGE 52
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<PAGE> PAGE 53
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<PAGE> PAGE 54
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<PAGE> PAGE 55
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<PAGE> PAGE 56
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<PAGE> PAGE 57
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<PAGE> PAGE 58
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<PAGE> PAGE 59
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<PAGE> PAGE 60
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<PAGE> PAGE 61
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<PAGE> PAGE 62
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074 M001700 0
074 N001700 102008
074 O001700 617
074 P001700 0
074 Q001700 0
074 R011700 0
074 R021700 0
074 R031700 0
074 R041700 1
074 S001700 0
074 T001700 101390
074 U011700 7134
074 U021700 0
074 V011700 14.21
074 V021700 0.00
074 W001700 0.0000
074 X001700 13
074 Y001700 0
075 A001700 53106
075 B001700 0
076 001700 0.00
083 A001700 N
083 B001700 0
084 A001700 N
084 B001700 0
085 A001700 N
085 B001700 N
028 A011800 1941
028 A021800 95
028 A031800 0
028 A041800 837
028 B011800 1758
028 B021800 95
028 B031800 0
028 B041800 253
028 C011800 1648
028 C021800 112
028 C031800 0
<PAGE> PAGE 63
028 C041800 237
028 D011800 1541
028 D021800 114
028 D031800 0
028 D041800 356
028 E011800 1989
028 E021800 109
028 E031800 0
028 E041800 167
028 F011800 2488
028 F021800 712
028 F031800 0
028 F041800 371
028 G011800 11365
028 G021800 1237
028 G031800 0
028 G041800 2221
028 H001800 0
062 A001800 Y
062 B001800 0.0
062 C001800 0.0
062 D001800 0.0
062 E001800 0.0
062 F001800 0.0
062 G001800 0.0
062 H001800 0.0
062 I001800 0.0
062 J001800 0.0
062 K001800 0.0
062 L001800 3.0
062 M001800 19.2
062 N001800 16.4
062 O001800 0.0
062 P001800 0.0
062 Q001800 56.5
062 R001800 0.0
063 A001800 0
063 B001800 13.6
066 A001800 N
067 001800 N
068 A001800 N
068 B001800 N
069 001800 N
070 A011800 Y
070 A021800 N
070 B011800 Y
070 B021800 N
070 C011800 Y
070 C021800 N
070 D011800 Y
070 D021800 N
<PAGE> PAGE 64
070 E011800 Y
070 E021800 N
070 F011800 Y
070 F021800 N
070 G011800 Y
070 G021800 N
070 H011800 Y
070 H021800 N
070 I011800 Y
070 I021800 N
070 J011800 Y
070 J021800 Y
070 K011800 Y
070 K021800 N
070 L011800 Y
070 L021800 Y
070 M011800 Y
070 M021800 Y
070 N011800 Y
070 N021800 N
070 O011800 N
070 O021800 N
070 P011800 Y
070 P021800 N
070 Q011800 N
070 Q021800 N
070 R011800 Y
070 R021800 N
071 A001800 28
071 B001800 12
071 C001800 17
071 D001800 71
072 A001800 12
072 B001800 1290
072 C001800 0
072 D001800 0
072 E001800 0
072 F001800 142
072 G001800 0
072 H001800 0
072 I001800 0
072 J001800 43
072 K001800 0
072 L001800 45
072 M001800 6
072 N001800 0
072 O001800 0
072 P001800 0
072 Q001800 0
072 R001800 11
072 S001800 3
<PAGE> PAGE 65
072 T001800 0
072 U001800 0
072 V001800 0
072 W001800 0
072 X001800 250
072 Y001800 60
072 Z001800 1100
072AA001800 668
072BB001800 295
072CC011800 169
072CC021800 0
072DD011800 1222
072DD021800 0
072EE001800 467
073 A011800 0.6600
073 A021800 0.0000
073 B001800 0.1500
073 C001800 0.0000
074 A001800 776
074 B001800 0
074 C001800 864
074 D001800 26388
074 E001800 0
074 F001800 0
074 G001800 0
074 H001800 0
074 I001800 0
074 J001800 0
074 K001800 0
074 L001800 654
074 M001800 0
074 N001800 28682
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074 P001800 0
074 Q001800 0
074 R011800 0
074 R021800 0
074 R031800 0
074 R041800 35
074 S001800 0
074 T001800 28647
074 U011800 2797
074 U021800 0
074 V011800 10.24
074 V021800 0.00
074 W001800 0.0000
074 X001800 6
074 Y001800 0
075 A001800 17417
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<PAGE> PAGE 66
083 A001800 N
083 B001800 0
084 A001800 N
084 B001800 0
085 A001800 N
085 B001800 N
SIGNATURE SANDRA M. DADALT
TITLE ASSISTANT SECRETARY
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JOHN
HANCOCK VARIABLE SERIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000785303
<NAME> JOHN HANCOCK VARIABLE SERIES TRUST I
<SERIES>
<NUMBER> 1
<NAME> LARGE CAP GROWTH
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
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<RECEIVABLES> 1,437
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<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 151,894
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<DIVIDEND-INCOME> 7,924
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<OTHER-INCOME> 0
<EXPENSES-NET> 2,843
<NET-INVESTMENT-INCOME> 5,606
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<APPREC-INCREASE-CURRENT> 101,020
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<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (5,606)
<DISTRIBUTIONS-OF-GAINS> (62,455)
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<NUMBER-OF-SHARES-SOLD> 5,923
<NUMBER-OF-SHARES-REDEEMED> (2,941)
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<GROSS-EXPENSE> 2,843
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<PER-SHARE-NAV-BEGIN> 17.49
<PER-SHARE-NII> 0.17
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<PER-SHARE-DIVIDEND> (0.17)
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<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JOHN
HANCOCK VARIABLE SERIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERNCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000785303
<NAME> JOHN HANCOCK VARIABLE SERIES TRUST I
<SERIES>
<NUMBER> 2
<NAME> SOVEREIGN BOND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 738,165
<INVESTMENTS-AT-VALUE> 810,787
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<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 1,568
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<PAYABLE-FOR-SECURITIES> 21,967
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 165
<TOTAL-LIABILITIES> 22,132
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 775,414
<SHARES-COMMON-STOCK> 80,789
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 3,937
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 24,143
<NET-ASSETS> 803,770
<DIVIDEND-INCOME> 0
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<DISTRIBUTIONS-OF-GAINS> (5,170)
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<NUMBER-OF-SHARES-SOLD> 8,549
<NUMBER-OF-SHARES-REDEEMED> (8,085)
<SHARES-REINVESTED> 6,020
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<ACCUMULATED-NII-PRIOR> 0
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JOHN HANCOCK
VARIABLE SERIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000785303
<NAME> JOHN HANCOCK VARIABLE SERIES TRUST I
<SERIES>
<NUMBER> 3
<NAME> MONEY MARKET
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<S> <C>
<PERIOD-TYPE> 12-MOS
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<PERIOD-START> JAN-01-1997
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<NUMBER-OF-SHARES-SOLD> 18,333
<NUMBER-OF-SHARES-REDEEMED> (17,913)
<SHARES-REINVESTED> 1,200
<NET-CHANGE-IN-ASSETS> 16,028
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<GROSS-EXPENSE> 735
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<PER-SHARE-NAV-BEGIN> 10.00
<PER-SHARE-NII> (.53)
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<PER-SHARE-NAV-END> 10.00
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JOHN
HANCOCK VARIABLE SERIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000785303
<NAME> JOHN HANCOCK VARIABLE SERIES TRUST I
<SERIES>
<NUMBER> 4
<NAME> GROWTH & INCOME
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
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<DISTRIBUTIONS-OF-GAINS> (313,348)
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<NUMBER-OF-SHARES-REDEEMED> (8,699)
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<ACCUMULATED-NII-PRIOR> 0
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<GROSS-EXPENSE> 6,944
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<PER-SHARE-NAV-BEGIN> 14.65
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<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JOHN
HANCOCK VARIABLE SERIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000785303
<NAME> JOHN HANCOCK VARIABLE SERIES TRUST I
<SERIES>
<NUMBER> 5
<NAME> MANAGED
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<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
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<ACCUMULATED-NET-GAINS> (921)
<OVERDISTRIBUTION-GAINS> 0
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<ACCUMULATED-NII-PRIOR> 0
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JOHN
HANCOCK VARIABLE SERIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000785303
<NAME> JOHN HANCOCK VARIABLE SERIES TRUST I
<SERIES>
<NUMBER> 6
<NAME> INTERNATIONAL EQUITIES
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<S> <C>
<PERIOD-TYPE> 12-MOS
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<PERIOD-START> JAN-01-1997
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<NET-ASSETS> 152,359
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JOHN
HANCOCK VARIABLE SERIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000785303
<NAME> JOHN HANCOCK VARIABLE SERIES TRUST I
<SERIES>
<NUMBER> 7
<NAME> REAL ESTATE EQUITY
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<S> <C>
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<INTEREST-INCOME> 298
<OTHER-INCOME> 0
<EXPENSES-NET> 1,212
<NET-INVESTMENT-INCOME> 8,981
<REALIZED-GAINS-CURRENT> 5,143
<APPREC-INCREASE-CURRENT> 14,800
<NET-CHANGE-FROM-OPS> 28,924
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (8,255)
<DISTRIBUTIONS-OF-GAINS> (5,072)
<DISTRIBUTIONS-OTHER> (726)
<NUMBER-OF-SHARES-SOLD> 3,046
<NUMBER-OF-SHARES-REDEEMED> (2,446)
<SHARES-REINVESTED> 905
<NET-CHANGE-IN-ASSETS> 53,026
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,053
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 6,944
<AVERAGE-NET-ASSETS> 0
<PER-SHARE-NAV-BEGIN> 14.64
<PER-SHARE-NII> 0.77
<PER-SHARE-GAIN-APPREC> 1.68
<PER-SHARE-DIVIDEND> (0.71)
<PER-SHARE-DISTRIBUTIONS> (0.41)
<RETURNS-OF-CAPITAL> (0.06)
<PER-SHARE-NAV-END> 15.91
<EXPENSE-RATIO> 0.69
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JOHN
HANCOCK VARIABLE SERIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000785303
<NAME> JOHN HANCOCK VARIABLE SERIES TRUST I
<SERIES>
<NUMBER> 8
<NAME> SPECIAL OPPORTUNITIES
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 179,567
<INVESTMENTS-AT-VALUE> 208,965
<RECEIVABLES> 9,908
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 218,063
<PAYABLE-FOR-SECURITIES> 4,381
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 70
<TOTAL-LIABILITIES> 4,451
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 193,843
<SHARES-COMMON-STOCK> 13,884
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1,487
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 14,278
<NET-ASSETS> 213,612
<DIVIDEND-INCOME> 1,303
<INTEREST-INCOME> 650
<OTHER-INCOME> 0
<EXPENSES-NET> 1,771
<NET-INVESTMENT-INCOME> 182
<REALIZED-GAINS-CURRENT> 23,003
<APPREC-INCREASE-CURRENT> (14,445)
<NET-CHANGE-FROM-OPS> 8,740
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (182)
<DISTRIBUTIONS-OF-GAINS> (21,000)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 7,921
<NUMBER-OF-SHARES-REDEEMED> (757)
<SHARES-REINVESTED> 452
<NET-CHANGE-IN-ASSETS> 19,504
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,565
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,771
<AVERAGE-NET-ASSETS> 0
<PER-SHARE-NAV-BEGIN> 16.52
<PER-SHARE-NII> 0.01
<PER-SHARE-GAIN-APPREC> 0.56
<PER-SHARE-DIVIDEND> (0.01)
<PER-SHARE-DISTRIBUTIONS> (1.69)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 15.39
<EXPENSE-RATIO> 0.85
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JOHN
HANCOCK VARIABLE SERIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000785303
<NAME> JOHN HANCOCK VARIABLE SERIES TRUST I
<SERIES>
<NUMBER> 9
<NAME> SHORT TERM U.S. GOVERNMENT
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 48,349
<INVESTMENTS-AT-VALUE> 50,499
<RECEIVABLES> 675
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 51,174
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 54
<TOTAL-LIABILITIES> 54
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 51,161
<SHARES-COMMON-STOCK> 5,070
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 8
<ACCUMULATED-NET-GAINS> (66)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 17
<NET-ASSETS> 51,120
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 3,773
<OTHER-INCOME> 0
<EXPENSES-NET> 345
<NET-INVESTMENT-INCOME> 3,428
<REALIZED-GAINS-CURRENT> (31)
<APPREC-INCREASE-CURRENT> 374
<NET-CHANGE-FROM-OPS> 3,771
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (3,466)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,595
<NUMBER-OF-SHARES-REDEEMED> (3,708)
<SHARES-REINVESTED> 343
<NET-CHANGE-IN-ASSETS> (7,556)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 220
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 345
<AVERAGE-NET-ASSETS> 0
<PER-SHARE-NAV-BEGIN> 10.05
<PER-SHARE-NII> 0.59
<PER-SHARE-GAIN-APPREC> 0.03
<PER-SHARE-DIVIDEND> (0.59)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.08
<EXPENSE-RATIO> 0.68
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JOHN
HANCOCK VARIABLE SERIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000785303
<NAME> JOHN HANCOCK VARIABLE SERIES TRUST I
<SERIES>
<NUMBER> 10
<NAME> SMALL CAP GROWTH
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 40,147
<INVESTMENTS-AT-VALUE> 48,743
<RECEIVABLES> 301
<ASSETS-OTHER> 1
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 49,085
<PAYABLE-FOR-SECURITIES> 310
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 14
<TOTAL-LIABILITIES> 324
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 44,869
<SHARES-COMMON-STOCK> 4,298
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (2,774)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 6,667
<NET-ASSETS> 48,761
<DIVIDEND-INCOME> 112
<INTEREST-INCOME> 130
<OTHER-INCOME> 0
<EXPENSES-NET> 335
<NET-INVESTMENT-INCOME> (93)
<REALIZED-GAINS-CURRENT> (1,285)
<APPREC-INCREASE-CURRENT> 5,855
<NET-CHANGE-FROM-OPS> 24,477
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> (19)
<NUMBER-OF-SHARES-SOLD> 3,175
<NUMBER-OF-SHARES-REDEEMED> (956)
<SHARES-REINVESTED> 2
<NET-CHANGE-IN-ASSETS> 28,128
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 251
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 373
<AVERAGE-NET-ASSETS> 0
<PER-SHARE-NAV-BEGIN> 9.93
<PER-SHARE-NII> (.02)
<PER-SHARE-GAIN-APPREC> 1.44
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (.01)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.34
<EXPENSE-RATIO> 1.00
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JOHN
HANCOCK VARIABLE SERIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000785303
<NAME> JOHN HANCOCK VARIABLE SERIES TRUST I
<SERIES>
<NUMBER> 11
<NAME> INTERNATIONAL BALANCED
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 24,296
<INVESTMENTS-AT-VALUE> 24,976
<RECEIVABLES> 373
<ASSETS-OTHER> 251
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 25,600
<PAYABLE-FOR-SECURITIES> 41
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 139
<TOTAL-LIABILITIES> 180
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 25,289
<SHARES-COMMON-STOCK> 2,514
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (124)
<ACCUMULATED-NET-GAINS> 119
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 136
<NET-ASSETS> 25,420
<DIVIDEND-INCOME> 316
<INTEREST-INCOME> 765
<OTHER-INCOME> 0
<EXPENSES-NET> 278
<NET-INVESTMENT-INCOME> 803
<REALIZED-GAINS-CURRENT> 533
<APPREC-INCREASE-CURRENT> (530)
<NET-CHANGE-FROM-OPS> 618
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (793)
<DISTRIBUTIONS-OF-GAINS> (530)
<DISTRIBUTIONS-OTHER> (29)
<NUMBER-OF-SHARES-SOLD> 863
<NUMBER-OF-SHARES-REDEEMED> 798
<SHARES-REINVESTED> 130
<NET-CHANGE-IN-ASSETS> 1,322
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 215
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 394
<AVERAGE-NET-ASSETS> 0
<PER-SHARE-NAV-BEGIN> 10.39
<PER-SHARE-NII> 0.33
<PER-SHARE-GAIN-APPREC> (.05)
<PER-SHARE-DIVIDEND> (0.33)
<PER-SHARE-DISTRIBUTIONS> (0.22)
<RETURNS-OF-CAPITAL> (.01)
<PER-SHARE-NAV-END> 10.11
<EXPENSE-RATIO> 1.10
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JOHN
HANCOCK VARIABLE SERIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000785303
<NAME> JOHN HANCOCK VARIABLE SERIES TRUST I
<SERIES>
<NUMBER> 12
<NAME> MID CAP GROWTH
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 32,059
<INVESTMENTS-AT-VALUE> 40,313
<RECEIVABLES> 1,037
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 41,350
<PAYABLE-FOR-SECURITIES> 1,041
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 74
<TOTAL-LIABILITIES> 1,115
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 34,538
<SHARES-COMMON-STOCK> 3,374
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (12)
<ACCUMULATED-NET-GAINS> (503)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 6,212
<NET-ASSETS> 40,235
<DIVIDEND-INCOME> 91
<INTEREST-INCOME> 136
<OTHER-INCOME> 0
<EXPENSES-NET> 298
<NET-INVESTMENT-INCOME> (71)
<REALIZED-GAINS-CURRENT> (165)
<APPREC-INCREASE-CURRENT> 5,635
<NET-CHANGE-FROM-OPS> 5,357
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,214
<NUMBER-OF-SHARES-REDEEMED> (454)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 23,743
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 230
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 383
<AVERAGE-NET-ASSETS> 0
<PER-SHARE-NAV-BEGIN> 10.22
<PER-SHARE-NII> (0.02)
<PER-SHARE-GAIN-APPREC> 1.73
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 11.93
<EXPENSE-RATIO> 1.10
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JOHN
HANCOCK VARIABLE SERIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000785303
<NAME> JOHN HANCOCK VARIABLE SERIES TRUST I
<SERIES>
<NUMBER> 13
<NAME> LARGE CAP VALUE
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 58,211
<INVESTMENTS-AT-VALUE> 73,126
<RECEIVABLES> 465
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 75,591
<PAYABLE-FOR-SECURITIES> 305
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 17
<TOTAL-LIABILITIES> 322
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 64,194
<SHARES-COMMON-STOCK> 5,399
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 12
<ACCUMULATED-NET-GAINS> (10)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 9,073
<NET-ASSETS> 73,269
<DIVIDEND-INCOME> 1,187
<INTEREST-INCOME> 309
<OTHER-INCOME> 0
<EXPENSES-NET> 439
<NET-INVESTMENT-INCOME> 1,057
<REALIZED-GAINS-CURRENT> 1,866
<APPREC-INCREASE-CURRENT> 7,862
<NET-CHANGE-FROM-OPS> 10,785
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (1,057)
<DISTRIBUTIONS-OF-GAINS> (1,847)
<DISTRIBUTIONS-OTHER> (14)
<NUMBER-OF-SHARES-SOLD> 3,809
<NUMBER-OF-SHARES-REDEEMED> (414)
<SHARES-REINVESTED> 220
<NET-CHANGE-IN-ASSETS> 53,488
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 329
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 464
<AVERAGE-NET-ASSETS> 0
<PER-SHARE-NAV-BEGIN> 11.09
<PER-SHARE-NII> 0.29
<PER-SHARE-GAIN-APPREC> 2.84
<PER-SHARE-DIVIDEND> (0.29)
<PER-SHARE-DISTRIBUTIONS> (0.36)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 13.57
<EXPENSE-RATIO> 1.00
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JOHN HANCOCK
VARIABLE SERIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000785303
<NAME> JOHN HANCOCK VARIABLE SERIES TRUST I
<SERIES>
<NUMBER> 14
<NAME> MID CAP VALUE
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 54,486
<INVESTMENTS-AT-VALUE> 64,569
<RECEIVABLES> 416
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 64,896
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 12
<TOTAL-LIABILITIES> 12
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 62,219
<SHARES-COMMON-STOCK> 4,686
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (480)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 3,240
<NET-ASSETS> 64,973
<DIVIDEND-INCOME> 292
<INTEREST-INCOME> 203
<OTHER-INCOME> 0
<EXPENSES-NET> 330
<NET-INVESTMENT-INCOME> 165
<REALIZED-GAINS-CURRENT> 4,133
<APPREC-INCREASE-CURRENT> 2,209
<NET-CHANGE-FROM-OPS> 6,507
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (165)
<DISTRIBUTIONS-OF-GAINS> (4,605)
<DISTRIBUTIONS-OTHER> (4)
<NUMBER-OF-SHARES-SOLD> 3,902
<NUMBER-OF-SHARES-REDEEMED> (526)
<SHARES-REINVESTED> 347
<NET-CHANGE-IN-ASSETS> 54,047
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 252
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 360
<AVERAGE-NET-ASSETS> 0
<PER-SHARE-NAV-BEGIN> 11.35
<PER-SHARE-NII> .05
<PER-SHARE-GAIN-APPREC> 3.59
<PER-SHARE-DIVIDEND> (.05)
<PER-SHARE-DISTRIBUTIONS> (1.07)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 13.87
<EXPENSE-RATIO> 1.05
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JOHN
HANCOCK VARIABLE SERIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000785303
<NAME> JOHN HANCOCK VARIABLE SERIES TRUST I
<SERIES>
<NUMBER> 15
<NAME> SMALL CAP VALUE
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 36,721
<INVESTMENTS-AT-VALUE> 42,993
<RECEIVABLES> 276
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 43,269
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 8
<TOTAL-LIABILITIES> 8
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 41,236
<SHARES-COMMON-STOCK> 3,488
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 7
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 8
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 2,024
<NET-ASSETS> 43,261
<DIVIDEND-INCOME> 266
<INTEREST-INCOME> 138
<OTHER-INCOME> 0
<EXPENSES-NET> 245
<NET-INVESTMENT-INCOME> 159
<REALIZED-GAINS-CURRENT> 3,158
<APPREC-INCREASE-CURRENT> 1,324
<NET-CHANGE-FROM-OPS> 4,641
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (159)
<DISTRIBUTIONS-OF-GAINS> (3,158)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,708
<NUMBER-OF-SHARES-REDEEMED> (471)
<SHARES-REINVESTED> 269
<NET-CHANGE-IN-ASSETS> 32,720
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 187
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 303
<AVERAGE-NET-ASSETS> 0
<PER-SHARE-NAV-BEGIN> 10.73
<PER-SHARE-NII> 0.08
<PER-SHARE-GAIN-APPREC> 2.66
<PER-SHARE-DIVIDEND> (0.08)
<PER-SHARE-DISTRIBUTIONS> (0.99)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 12.40
<EXPENSE-RATIO> 1.05
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JOHN
HANCOCK VARIABLE SERIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000785303
<NAME> JOHN HANCOCK VARIABLE SERIES TRUST I
<SERIES>
<NUMBER> 16
<NAME> INTERNATIONAL OPPORTUNITIES
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 89,445
<INVESTMENTS-AT-VALUE> 101,315
<RECEIVABLES> 583
<ASSETS-OTHER> 83
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 102,008
<PAYABLE-FOR-SECURITIES> 3
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 41
<TOTAL-LIABILITIES> 44
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 30,423
<SHARES-COMMON-STOCK> 2,882
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (48)
<ACCUMULATED-NET-GAINS> (8)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 264
<NET-ASSETS> 30,631
<DIVIDEND-INCOME> 370
<INTEREST-INCOME> 81
<OTHER-INCOME> 0
<EXPENSES-NET> 295
<NET-INVESTMENT-INCOME> 156
<REALIZED-GAINS-CURRENT> 268
<APPREC-INCREASE-CURRENT> (771)
<NET-CHANGE-FROM-OPS> (347)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (188)
<DISTRIBUTIONS-OF-GAINS> (235)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,704
<NUMBER-OF-SHARES-REDEEMED> (471)
<SHARES-REINVESTED> 269
<NET-CHANGE-IN-ASSETS> 12,733
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 235
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 381
<AVERAGE-NET-ASSETS> 0
<PER-SHARE-NAV-BEGIN> 10.60
<PER-SHARE-NII> 0.10
<PER-SHARE-GAIN-APPREC> .11
<PER-SHARE-DIVIDEND> (.10)
<PER-SHARE-DISTRIBUTIONS> (.08)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.63
<EXPENSE-RATIO> 1.22
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JOHN
HANCOCK VARIABLE SERIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000785303
<NAME> JOHN HANCOCK VARIABLE SERIES TRUST I
<SERIES>
<NUMBER> 17
<NAME> EQUITY INDEX
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 89,445
<INVESTMENTS-AT-VALUE> 101,315
<RECEIVABLES> 610
<ASSETS-OTHER> 83
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 102,008
<PAYABLE-FOR-SECURITIES> 617
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1
<TOTAL-LIABILITIES> 618
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 89,871
<SHARES-COMMON-STOCK> 7,134
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 1
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (153)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 11,671
<NET-ASSETS> 101,390
<DIVIDEND-INCOME> 1,020
<INTEREST-INCOME> 35
<OTHER-INCOME> 0
<EXPENSES-NET> 0
<NET-INVESTMENT-INCOME> 1,055
<REALIZED-GAINS-CURRENT> 1,622
<APPREC-INCREASE-CURRENT> 10,498
<NET-CHANGE-FROM-OPS> 13,125
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (1,055)
<DISTRIBUTIONS-OF-GAINS> (1,534)
<DISTRIBUTIONS-OTHER> (202)
<NUMBER-OF-SHARES-SOLD> 6,622
<NUMBER-OF-SHARES-REDEEMED> 201
<SHARES-REINVESTED> (1,009)
<NET-CHANGE-IN-ASSETS> 86,740
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 132
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 349
<AVERAGE-NET-ASSETS> 0
<PER-SHARE-NAV-BEGIN> 11.10
<PER-SHARE-NII> 0.24
<PER-SHARE-GAIN-APPREC> 3.41
<PER-SHARE-DIVIDEND> (.24)
<PER-SHARE-DISTRIBUTIONS> (.25)
<RETURNS-OF-CAPITAL> (.05)
<PER-SHARE-NAV-END> 14.21
<EXPENSE-RATIO> 0
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JOHN
HANCOCK VARIABLE SERIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000785303
<NAME> JOHN HANCOCK VARIABLE SERIES TRUST I
<SERIES>
<NUMBER> 18
<NAME> STRATEGIC BOND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1997
<PERIOD-START> JAN-01-1997
<PERIOD-END> DEC-31-1997
<INVESTMENTS-AT-COST> 25,953
<INVESTMENTS-AT-VALUE> 27,252
<RECEIVABLES> 654
<ASSETS-OTHER> 776
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 28,682
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 35
<TOTAL-LIABILITIES> 35
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 28,217
<SHARES-COMMON-STOCK> 2,797
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (124)
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 554
<NET-ASSETS> 28,647
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 1,290
<OTHER-INCOME> 0
<EXPENSES-NET> 190
<NET-INVESTMENT-INCOME> 1,100
<REALIZED-GAINS-CURRENT> 373
<APPREC-INCREASE-CURRENT> 288
<NET-CHANGE-FROM-OPS> 1,761
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (537)
<DISTRIBUTIONS-OF-GAINS> (55)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,515
<NUMBER-OF-SHARES-REDEEMED> (255)
<SHARES-REINVESTED> 59
<NET-CHANGE-IN-ASSETS> 24,098
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 142
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 250
<AVERAGE-NET-ASSETS> 0
<PER-SHARE-NAV-BEGIN> 10.16
<PER-SHARE-NII> 0.59
<PER-SHARE-GAIN-APPREC> .30
<PER-SHARE-DIVIDEND> (0.61)
<PER-SHARE-DISTRIBUTIONS> (0.15)
<RETURNS-OF-CAPITAL> (0.05)
<PER-SHARE-NAV-END> 10.24
<EXPENSE-RATIO> 1.00
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
ERNST & YOUNG LLP
200 CLARENDON STREET
BOSTON, MASSACHUSETTS 02116-5072
Phone: 617-266-2000 Fax: 617-266-5843
Report of Independent Auditors
To the Board of Trustees
John Hancock Variable Series Trust I
In planning and performing our audit of the financial statements of John
Hancock Variable Series Trust I (comprising, respectively, the Large Cap
Growth, Sovereign Bond, International Equities, Small Cap Growth,
International Balanced, Mid Cap Growth, Large Cap Value, Money Market, Mid Cap
Value, Special Opportunities, Real Estate Equity, Growth & Income, Managed,
Short-Term U.S. Government, Small Cap Value, International Opportunities,
Equity Index and Strategic Bond Portfolios) for the year ended December 31,
1997, we considered its internal control, including control activities for
safeguarding securities, in order to determine our auditing procedures for the
purpose of expressing our opinion on the financial statements and to comply
with the requirements of Form N-SAR, not to provide assurance on the internal
control.
The management of John Hancock Variable Series Trust I is responsible for
establishing and maintaining internal control. In fulfilling this
responsibility, estimates and judgments by management are required to assess
the expected benefits and related costs of controls. Generally, controls that
are relevant to an audit pertain to the entity's objective of preparing
financial statements for external purposes that are fairly presented in
conformity with generally accepted accounting principles. Those controls
include the safeguarding of assets against unauthorized acquisition, use or
disposition.
Because of inherent limitations in internal control, errors or fraud may occur
and not be detected. Also, projection of any evaluation of internal control to
future periods is subject to the risk that it may become inadequate because of
changes in conditions or that the effectiveness of the design and operation
may deteriorate.
Our consideration of the internal control would not necessarily disclose all
matters in the internal control that might be material weaknesses under
standards established by the American Institute of Certified Public
Accountants. A material weakness is a condition in which the design or
operation of one or more of specific internal control components does not
reduce to a relatively low level the risk that errors or fraud in amounts that
would be material in relation to the financial statements being audited may
occur and not be detected within a timely period by employees in the normal
course of performing their assigned functions. However, we noted no matters
involving internal control and its operation, including controls for
safeguarding securities, that we consider to be material weaknesses as defined
above at December 31, 1997.
This report is intended solely for the information and use of the Board of
Trustees and management of John Hancock Variable Series Trust I and the
Securities and Exchange Commission.
/s/ERNST & YOUNG LLP
February 6, 1998
Ernst & Young LLP is a member of Ernst & Young International, Ltd.
