Middle and high schoolers, (N=92), some of whom were mainstreamed students, completed an 80-item checklist describing personal, behavioral, or descriptive characteristics. Responses from the original survey indicated broad consensus of all participating groups on a number of items, with differences emerging more on the basis of age than sex. Subsequent distributions of the checklist have included regular classes in other cities and exceptional classes for the learning disabled, emotionally disturbed, and mildly mentally handicapped. Further replications are indicated by this research; a number of differences noted between exceptional populations offer questions worthy of exploration. It is hoped that ultimately some bases for differentiation of mild exceptionalities among the teenage population may be clarified, and that the indicators may also serve as predictors for successful mainstreaming as well as guidelines for individual educational needs. (Author/CL)