Critics of testing for admission purposes cite the moderate correlations of admissions test scores with success in college. In response, this study applies formulas from classical measurement theory to observed correlations to correct for restricted variances in predictor and success variables. Estimates of the correlations in the population of high school graduates are derived from two of the several formulas in the literature. This article describes limitations and encourages additional investigation into the use of the formulas for estimating correlations in unrestricted populations. (Contains 3 tables.)