About one third of college students are required to take remedial courses. Assignment to remediation is generally made on the basis of performance on a placement exam. When students are required to take a placement exam prior to enrolling in college-level courses, assignment to remediation may...

Half of all college students will enroll in remedial coursework but evidence of its effectiveness is mixed. Using a regression-discontinuity design with data from a large urban community college system, we make three contributions. First, we articulate three alternative hypotheses regarding the...