This article utilizes mixed methods--a lottery-based experimental design supplemented by qualitative data--to examine college readiness within an innovative high school setting: early college high schools. Early colleges are small schools that merge the high school and college experiences and are targeted at students underrepresented in college. Results show that early college students are more likely to have successfully completed the courses they need for entrance into college; early college students also graduated from high school at a higher rate. Interview and survey data show that early college students are generally considered similarly prepared to more traditional postsecondary students. The interview data also provide detailed descriptions of the kinds of strategies the schools use to support college readiness. The article concludes with lessons learned for secondary school principals.