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The Advanced Placement (AP) program has undergone two major reforms in recent decades: the first aimed at increasing access and the second at increasing relevance. Both initiatives are partially designed to increase the number of high school students from low-income backgrounds who have access to college-level coursework. Yet critics argue that schools in less-resourced communities are unable to implement AP at the level expected by its founders. We offer the first model of the components inherent in a well-implemented AP science course and the first evaluation of AP implementation with a focus on public schools newly offering the inquiry-based version of AP Biology and Chemistry courses. We find that these frontier schools were able to implement most, but not all, of the key components of an AP science course.

To evaluate how Advanced Placement courses affect college-going, we randomly assigned the offer of enrollment into an AP science course to over 1,800 students in 23 schools that had not previously offered the course. We find no AP course effects on students’ college entrance exam scores (SAT/ACT). As expected, AP course-takers are substantially more likely to take the AP exam than their control group counterparts. At the same time, treatment group students opt out of the exam at very high rates and most do not earn a passing score on the AP exam. Though less precisely estimated, the results also suggest that taking the AP course increases students’ aspirations to attend higher-quality colleges but does not lead to enrollment in such institutions.

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