This What Works Clearinghouse (WWC) review assesses the quality and findings of a study examining the Early College High School Initiative, a dual enrollment program that aims to help underrepresented students by offering them the opportunity to take college-level courses and have associated credits counted both at the high school and postsecondary levels. The review found that the study meets WWC standards without reservations, and met the standards for having strong evidence of effectiveness (Tier 1) under the Every Student Succeeds Act tiers of evidence.

The study found that participating in the Early College High School program had a large positive effect on college enrollment within one year of high school graduation and on postsecondary degree attainment within 6 years after high school graduation. 

To implement the program, Early Colleges partner with postsecondary institutions and arrange for all tuition costs to be covered. The intervention includes providing academic and social supports to ensure that students earn one or two years of college credit and thereby improve their chances of completing college.