In the context of the vastly increased percentage of high school graduates in Taiwan now entering colleges and universities, this paper explores the phenomenon of senior high school students attending cram schools. The purpose of educational reform has been to reduce the need for "cram schooling," yet numerous studies reveal that many students still attend cram schools. In this paper, we are concerned with the relationship between cram school attendance and students' scores on College Entrance Exams. Furthermore, we want to determine whether the much greater number of colleges/ universities and of students entering them, or "Multiple-College-Entrance" system, has contributed to the increasing number of cram schools. The study used data retrieved from "Taiwan Higher Education Data System" to conduct a quantitative analysis. The findings were as follows. Firstly, students' socio-economic background was a negligible factor with regard to their attending cram schools. Secondly, "cramming" did not necessarily improve students' scores on the College Entrance Exams; these scores had a much clearer correlation with students' high school and intended university majors (e.g. high scores for medical-science majors) as well as with their high school grades. Given the unclear impact of studying in cram schools on College Entrance Exam scores, students and their parents should consider whether cram school attendance was worth the time and money.