We examine the impacts of early college high schools, small schools of choice located on college campuses. These schools provide a no-cost opportunity for students to earn college credit—or a 2-year degree—while in high school. Using rich administrative data on multiple cohorts of students and quasiexperimental methods informed by the within-study comparison literature, we estimate program impacts of enrolling in a North Carolina early college in ninth grade on a variety of secondary and postsecondary outcomes. We include all such schools in the state, and we report generally promising findings. Early colleges increase important high school outcomes, boost associate’s degree completion, and raise 4-year-college enrollment at less selective public institutions. We also show the differences of these impacts across race, home-district performance, and host site, helping us better understand the implementation and effects of this promising intervention in one state that has brought this school reform model to scale.

中文翻译：

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早期大学规模：对中学和中学后成果的影响

我们研究了早期大学高中、位于大学校园内的小型首选学校的影响。这些学校为学生在高中期间免费获得大学学分或 2 年制学位提供了机会。使用关于多组学生的丰富管理数据和研究内比较文献提供的准实验方法，我们估计了九年级就读北卡罗来纳州早期大学对各种中学和中学后成果的计划影响。我们将州内所有此类学校都包括在内，我们报告了总体上有希望的发现。早期大学提高重要的高中成绩，提高副学士学位的完成率，并提高选择性较少的公共机构的 4 年大学入学率。我们还展示了这些影响在种族、家乡地区表现、