Education policymakers have long sought to establish teaching standards that will measure new or continuing teachers against these standards. The problem is, existing methods for certifying teachers have been criticized for being either so onerous as to deter good candidates or so lax as to keep weak teachers in the profession. To provide another…

A search for better predictors of incomes of high school and college graduates is described. The accuracy of the prediction, implicit in the work of John R. Walsh of Harvard University, that the income differences in a given year are good indicators of income differences in future years, was tested by applying standard statistical procedures to…