College-based transition services provide opportunities for transition-age students with intellectual disability and autism (ID/A) between the ages of 18 and 22 to receive their final years of secondary transition services in a college or university setting. We compared the extent to which youth with ID/A experience in-school predictors of post-school success in conventional vs. college-based transition services. For our analysis we used the NLTS 2012 Phase I dataset and the Transition and Postsecondary Programs for Students with Intellectual Disability (TPSID) 2010-2015 dataset. The findings of this study also identify potential advantages to offering college-based transition services, as well as guidance about priority areas where transition services could be improved in both conventional and college-based approaches. [For the companion report, "Matching In-School Predictors of Postschool Success to Variables in the National Longitudinal Transition Study 2012. Think College Reports," see ED626992.]