GFA students who choose to take AP exams continue to be eligible to earn credits in many colleges; colleges offer credit not for AP courses but for scores on AP Exams. In recent years, though, many colleges have decreased the credit students are eligible to receive on the basis of their AP scores. Colleges can also limit students' ability to place into higher-level courses by requiring them to take the introductory-level classes that they offer. It has become increasingly rare for students to receive enough AP credits to place out of an entire year of college or to graduate from college in less than four years.