This study provides initial evidence for the reliability and structural validity of scores from the Primary Intervention Rating Scale (Lane, Robertson, & Wehby, 2002), an adapted version of the Intervention Rating Profile-15 (Witt & Elliott, 1985) designed to assess faculty's perceptions of social validity of primary prevention plans prior to intervention onset. Results indicated the Primary Intervention Rating Scale is a one-factor instrument, with high internal consistency and utility. These results were found to replicate across educators from elementary, middle, and high schools. In addition, there was a significant, positive relation between social validity and treatment integrity when examining data at the school-site level. Limitations and future directions are offered. (Contains 4 tables.)