Using extensive data from before and after school finance reforms, the author analyzes the reforms' effects on school finance inequities in Michigan and Missouri, for all school districts and for suburban districts. In Michigan, data from 1970-71 show, the state met neither of two equity standards--equality in expenditure per pupil and fiscal neutrality--either for all districts or for suburban districts. After the 1973 finance reform, which instituted a guaranteed yield program, data from 1974-75 show fiscal neutrality was improved but expenditure-per-pupil inequalities were not. Effects on Michigan's suburban districts were the same as for all districts. Missouri also, 1975-76 data show, failed to meet either equity standard before its reform; inequities were greater among suburban districts. In 1977 Missouri introduced a minimum foundation program with a guaranteed tax base (GTB). Simulation of the reform's impact indicates that it will improve fiscal neutrality but have no effect on expenditure inequalities, and that results will be the same for suburban as for all districts. Hence, reforms using GTB or guaranteed yield programs seem to meet the fiscal neutrality standard but not the expenditure-per-pupil standard, and to affect suburban districts the same as all districts. (RW)