Edited sentence: CIS simulates a truer college experience, as unlike AP courses, students are already enrolled in a college institution and need only to earn a quality grade throughout the course, rather than the potential for college credit being based solely on the score of a cumulative final exam.The United States Department of Education recommends expanding accelerated learning options that offer true post-secondary course work so that students enter higher education with a minimum of six college credits already earned, as students who fail to earn 20 college credits by the end of their first year were less likely to graduate from college