<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 11
<NAME> State Street Research High Income Fund-Class A
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> MAR-31-2001
<PERIOD-START> APR-01-2000
<PERIOD-END> SEP-30-2000
<INVESTMENTS-AT-COST> 841,365,604
<INVESTMENTS-AT-VALUE> 606,405,431
<RECEIVABLES> 21,477,293
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 627,882,724
<PAYABLE-FOR-SECURITIES> 2,182,251
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 43,232,378
<TOTAL-LIABILITIES> 45,414,629
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 907,973,127
<SHARES-COMMON-STOCK> 85,846,117
<SHARES-COMMON-PRIOR> 99,227,088
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 90,544,859
<ACCUM-APPREC-OR-DEPREC> (234,960,173)
<NET-ASSETS> 582,468,095
<DIVIDEND-INCOME> 3,336,833
<INTEREST-INCOME> 29,541,655
<OTHER-INCOME> 0
<EXPENSES-NET> 5,261,809
<NET-INVESTMENT-INCOME> 27,616,679
<REALIZED-GAINS-CURRENT> (36,743,496)
<APPREC-INCREASE-CURRENT> (74,681,544)
<NET-CHANGE-FROM-OPS> (83,808,361)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (22,537,500)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 6,801,184
<NUMBER-OF-SHARES-REDEEMED> (23,325,071)
<SHARES-REINVESTED> 3,142,916
<NET-CHANGE-IN-ASSETS> (257,288,473)
<ACCUMULATED-NII-PRIOR> 1,501,659
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 53,801,363
<GROSS-ADVISORY-FEES> 2,087,484
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 5,293,379
<AVERAGE-NET-ASSETS> 714,439,536
<PER-SHARE-NAV-BEGIN> 5.05
<PER-SHARE-NII> 0.19
<PER-SHARE-GAIN-APPREC> (0.73)
<PER-SHARE-DIVIDEND> (0.25)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 4.26
<EXPENSE-RATIO> 1.24
</TABLE>
