This study offers validity evidence for the Parental Academic Support Scale, a 16-item multidimensional measure that assesses support related to a child's academic performance, classroom behavior, preparation, hostile peer interactions, and health. Confirmatory factor analysis of the Parental Academic Support Scale (PASS) revealed a close model fit and replicated prior confirmatory factor analysis tests, and ultimately provided additional evidence for content validity. Correlations between parental academic support and the Teacher-Parent Contact Scale provided concurrent validity evidence. More importantly, associations between parental academic support and a child's success in school suggest that the PASS construct is related to other theoretically similar constructs, providing initial evidence for construct validity. Implications and recommendations for future research are discussed.