Differences across and within individual colleges proved to be the greatest source of variability. In comparison, differences across regions, college groups (as determined by the number of 1963 A.P. candidates) and subject fields were found to be of minor importance. Data on awards of placement and credit to students who had not participated in the formal A. P. Program were also collected and compared with data for the formal A. P. candidates. Although approximately three times as many non-A.P. students were given some positive college action, our tabulations showed that only 27% of this group were given recognition carrying credit, whereas the achievement of 75% of A. P. students who gained any reward for college level work done in secondary school was recognized by awards of placement and credit or credit alone. In the appendices of this report are tables which present the relation of A. P. examination score to various college actions by region, college group and subject matter fields.