This study investigated the relation among parents' perceptions of the adaptive behavior of students considered for placement in a class for educable mentally retarded, the self-ratings of those students, and ratings of those students by their teachers. Parents' ratings were gathered using the Adaptive Behavior Inventory for Children. Students' self-ratings and teachers' ratings were collected using the Behavior Rating Profile. Moderate association was found between parents' adaptive behavior ratings and the students' self-ratings of peer relationships. Significant but relatively low association was found between parents' adaptive behavior ratings and teachers' ratings. Implications of the findings for psychologists and special educators are mentioned.