<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000811869
<NAME> THE AAL MUTUAL FUNDS
<SERIES>
   <NUMBER> 072
   <NAME> THE AAL MID CAP STOCK FUND CLASS B
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          APR-30-2000
<PERIOD-START>                             MAY-01-1999
<PERIOD-END>                               OCT-29-1999
<INVESTMENTS-AT-COST>                        590523559
<INVESTMENTS-AT-VALUE>                       656766608
<RECEIVABLES>                                  7040746
<ASSETS-OTHER>                                   52337
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                               663859691
<PAYABLE-FOR-SECURITIES>                      16035287
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      1068509
<TOTAL-LIABILITIES>                           17103796
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     544578403
<SHARES-COMMON-STOCK>                          1360050
<SHARES-COMMON-PRIOR>                          1244530
<ACCUMULATED-NII-CURRENT>                     (765521)
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                       36699964
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                      66243049
<NET-ASSETS>                                  19592064
<DIVIDEND-INCOME>                              2440269
<INTEREST-INCOME>                              1022382
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 4228172
<NET-INVESTMENT-INCOME>                       (765521)
<REALIZED-GAINS-CURRENT>                      32476744
<APPREC-INCREASE-CURRENT>                      6195383
<NET-CHANGE-FROM-OPS>                         37906606
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                         153733
<NUMBER-OF-SHARES-REDEEMED>                    (38213)
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                        38449350
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                      4223220
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          2117695
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                4228172
<AVERAGE-NET-ASSETS>                          18669195
<PER-SHARE-NAV-BEGIN>                            13.64
<PER-SHARE-NII>                                  (.09)
<PER-SHARE-GAIN-APPREC>                            .86
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              14.41
<EXPENSE-RATIO>                                   2.47


</TABLE>