Two samples of 50 kindergarten children each were tested for IQ, reading and arithmetic achievement, and rated by teachers for social and academic competence. The children were tested again in third grade for reading, spelling, and arithmetic achievement, and rated for classroom coping behaviors. In addition, one kindergarten sample was rated for interest and participation versus apathy and withdrawal, and rated for cooperation and compliance versus anger and defiance. All of the kindergarten tests and ratings had significant positive correlations with the third grade achievement test scores and almost all had significant negative correlations with the "dependency" score in the third grade Schedule for Classroom Activity Norms (SCAN). The kindergarten rating for interest and participation, however, had the highest correlation of any of the predictors for third grade achievement test scores. Also, although IQ (Stanford-Binet) was the next best predictor of third grade arithmetic achivement, it did not predict reading or spelling as well as the kindergarten measures of social and academic competencies. Peer acceptance was the best single predictor of dependency behavior, with IQ adding to this prediction. (CTM)