This study is a means of validating the Harter's Social Support Scale for Children on a sample of Mexican and Mexican American ninth-grade students to assist researchers and practitioners to more accurately assess this variable on this specific Latino group. The psychometric information was obtained through intercorrelations and Cronbach's alpha. Results indicated that the scale was an adequate measure of perceived social support from parents, teachers, close friends, and classmates for the assessed sample. (Contains 5 tables.)