Performance on the Mid-Primary Screening Battery (MPS) at the time of school-entry was found to be related to a student's eventual level of academic success in high school. Other related variables identified in a multiple regression analysis include the years of education of the father, the sex of the student, the years participating in the Mentally Gifted Minors Program, family integrity and birth order. Students' grade point average and rank in class as high school students were compared to their MPS classification as either educationally vulnerable, average, capable/vulnerable or capable. Students who had been identified as capable were found to demonstrate a higher composite of academic achievement than students in the other categories. (Author/CM)