The purpose of this study is to rigorously examine the implementation and impact of the Early College High School (ECHS) model in North Carolina. The primary goal of the ECHS model is to increase the number of students who graduate from high school and who continue on and succeed in college. Therefore, the anticipated long-term outcomes for the program include increased high school graduation rates, increased enrollment in college, and increased graduation from college. To track progress toward those long-term outcomes, the conceptual framework identifies intermediate outcomes that are associated with continued enrollment in high school and enrollment in and success in college. Highlighting early findings from both the impact and implementation results, the authors found that schools are implementing the Design Principles as intended, where students are reporting higher levels of support and interactions with school staff. According to the logic model, this should lead to higher course ECHS students have high expectations of college attendance and frequents college facilities. ECHS students also take more Algebra courses than the control group, indicating early positive impacts on ECHS. However, the authors are finding limited impacts on student's engagement, expectations, and attitudes towards school work. (Contains 1 figure, 4 tables, and 2 footnotes.)