Concurrent enrollment programs are commonly believed to have the potential to increase college readiness. The extent to which these programs succeed at this task, however, has not been sufficiently examined. This study is unique for three reasons. First, it is among the few studies to examine whether concurrent enrollment programs are associated with college readiness even after controlling for the effects of pre-existing student characteristics. Second, it represents an uncommon attempt to determine whether there are differences in the outcomes of different types of concurrent enrollment...