A study was done at Panhandle State University (Oklahoma) examining whether high school grade point averages or ACT (American College Testing) scores provided a better predictor of freshman academic success. Study procedures included a review of the literature, meetings with the academic vice president and five deans, as well as examination of dropout information on the university's 1989-90 year and analysis of information on 170 freshman. Conclusions from the analysis indicated that other factors besides the two scores may have an impact on college grades such as social orientation, age, and student goals at time of enrollment. However, evidence indicated there was a relationship between the high school average, ACT scores and college grades. Analysis of the freshmen in subgroups based on sex and ACT scores revealed that the multiple correlation difference was not large enough to justify the decision to use just one as a single predictor for all subgroups. However, the high school grade average was a better predictor for males and for those with ACT scores above 18. Included are 16 tables, appendixes containing a report of the meeting with the academic vice president, and a report of meetings with the five deans. Also included are 10 references. (JB)