This study examined the psychometric characteristics of the Scholastic Aptitude Test (SAT) administered under special conditions for nine handicapped groups. Four psychometric characteristics were studied: level of test performance, test reliability, speededness, and extent of unexpected differential item performance. Psychometric comparisons were made between a non-handicapped sample and each of nine different handicapped classifications. These contrasts were replicated across two forms of the same test, serving to increase confidence in the stability of results and their applicability to other SAT forms. With the exception of performance level, the psychometric characteristics of the SAT were generally comparable for the handicapped and nondisabled groups studied. It is concluded that this result should extend to other forms of the SAT and other disabled students to the extent that these groups and forms, and the conditions under which they are administered, are similar to those employed in this study. That the psychometric characteristics of the test are similar across populations provides evidence necessary to support SAT scores as accurate and fair indicators of the developed scholastic abilities of disabled students. (Author/PN)