<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>                   12-MOS
<FISCAL-YEAR-END>                          APR-30-1998
<PERIOD-START>                             MAY-01-1997
<PERIOD-END>                               APR-30-1998
<INVESTMENTS-AT-COST>                        559026647
<INVESTMENTS-AT-VALUE>                       676194561
<RECEIVABLES>                                 16282850
<ASSETS-OTHER>                                  130988
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                               692608399
<PAYABLE-FOR-SECURITIES>                       5581750
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       827341
<TOTAL-LIABILITIES>                            6409091
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     537642520
<SHARES-COMMON-STOCK>                           858826
<SHARES-COMMON-PRIOR>                           257783
<ACCUMULATED-NII-CURRENT>                        27822
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                       31361052
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                     117167914
<NET-ASSETS>                                  13555367
<DIVIDEND-INCOME>                              4723476
<INTEREST-INCOME>                              1376271
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 7793273
<NET-INVESTMENT-INCOME>                      (1693526)
<REALIZED-GAINS-CURRENT>                      66674556
<APPREC-INCREASE-CURRENT>                    118067392
<NET-CHANGE-FROM-OPS>                        183048422
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                      (825701)     
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                         566630
<NUMBER-OF-SHARES-REDEEMED>                    (24842)
<SHARES-REINVESTED>                              59255
<NET-CHANGE-IN-ASSETS>                       221193651
<ACCUMULATED-NII-PRIOR>                          23600
<ACCUMULATED-GAINS-PRIOR>                     22822205
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          4070582
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                7793273
<AVERAGE-NET-ASSETS>                           8135551
<PER-SHARE-NAV-BEGIN>                            12.69
<PER-SHARE-NII>                                (0.123)
<PER-SHARE-GAIN-APPREC>                          4.656
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                      (1.443)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              15.78
<EXPENSE-RATIO>                                   2.33
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>