WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 854437
<NAME> CENTENNIAL CALIFORNIA TAX-EXEMPT TRUST
<S> <C>
<PERIOD-TYPE> 12-mos
<FISCAL-YEAR-END> JUN-30-2000
<PERIOD-START> JUL-01-1999
<PERIOD-END> JUN-30-2000
<INVESTMENTS-AT-COST> 158,324,347
<INVESTMENTS-AT-VALUE> 158,324,347
<RECEIVABLES> 5,819,052
<ASSETS-OTHER> 29,609
<OTHER-ITEMS-ASSETS> 820,349
<TOTAL-ASSETS> 164,993,357
<PAYABLE-FOR-SECURITIES> 2,371,851
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 361,001
<TOTAL-LIABILITIES> 2,732,852
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 162,303,138
<SHARES-COMMON-STOCK> 162,303,138
<SHARES-COMMON-PRIOR> 155,871,989
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (42,633)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 162,260,505
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 5,427,932
<OTHER-INCOME> 0
<EXPENSES-NET> 1,306,680
<NET-INVESTMENT-INCOME> 4,121,252
<REALIZED-GAINS-CURRENT> (10,121)
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 4,111,131
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (4,121,252)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 568,522,086
<NUMBER-OF-SHARES-REDEEMED> 566,034,467
<SHARES-REINVESTED> 3,943,530
<NET-CHANGE-IN-ASSETS> 6,421,028
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (32,512)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 802,750
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,327,982
<AVERAGE-NET-ASSETS> 160,351,000
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.03
<PER-SHARE-GAIN-APPREC> 0.00
<PER-SHARE-DIVIDEND> 0.03
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.83
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0.00
</TABLE>