In this study, depth interviews, participation observation and data analysis of adult university students who participated in the study, the adult college students who work and study together were learning as follows to improve their academic achievement. The study participants selected seven students who were studying on weekends in order to maintain their top scores in their departments and to obtain qualifications for a lifelong educator certificate. First, self-directed learning using recording, video, and internet materials is conducted. Second, they are practicing real life and exploring social roles through field - oriented task fulfillment. Third, they are learning to solve problems through mentor mentee activities. Fourth, community learning that share experiences with each other through learning club activities. Fifth, self - reflective learning is designed to design learning difficulties and the second life through consultation with various professors. The implication of this study is that it has an academic significance in that it has attempted a micro approach by applying qualitative research method. Also, It is meaningful that the age of admission after graduation can offer suitable learning methods to adult college students.