A number of best practices are recommended by researchers and professionals in the field of transition to improve postschool outcomes for youth with intellectual disabilities. This study analyzed data from the National Longitudinal Transition Study-2 to examine whether best practices are predictive of postschool outcomes. The combination of five best practices was found to significantly predict employment, postsecondary education, and enjoyment of life outcomes after controlling for characteristics. In these analyses, parent expectations for employment and postsecondary education were some of the strongest predictors of postschool success. Although this study had several limitations, these findings suggest that best practices may be predictive of postschool success and highlight the importance of having high expectations for all youth.