This study focuses on the course-elective behavior and related factors of the core-curriculum reform in order to assess its practical effect on Tamkang University. The study comprises four independent but related investigations. The first one is concerned with students' course-elective attitudes and responses to the core-courses. The second evaluates the course-elective procedure in five fields. The third compares the characteristics of popular and unpopular courses. The fourth is about the relation between teaching evaluation and learning efficacy. A survey by questionnaire was given to the students selected through the two-stage stratified sampling method; the valid questionnaires were 690. The other data result from the analysis of administrative documents. The important findings are shown as following: Certain parts of the course-elective procedure are inadequate to meet educational goals. To be successfully enrolled in a desired course is directly related to a student's satisfaction level with the class. The scheduled time and course titles are essential factors in choosing a core course; in contrast, the teacher's grading has little bearing on the student's decision. Students' evaluation of instruction is correlated with their self-perceived learning efficacy, etc. The findings have been applied to adjusting the practices of the core-curriculum and follow-up research is scheduled.