The purpose of this study was to examine the effects of creative discretional activity in a self-directed learning program (CSLP) on middle School students\' self-efficacy, motivation, and academic achievement. This study was carried out by selecting 1 class (38 students) at B middle school in Seoul as an experimental group and another class (36 students) at the same school as a control group. CSLP is a new program created by the researcher to help students carry out self-directed learning by using Song In-Seop\'s (2006) Self-directed Learning Model. CSLP was applied to the experimental group and a human development program was applied to the control group. The development of self-efficacy and motivation were measured in pre- and post-tests, and academic achievement was used as the first and second academic term scores. The collected data were analyzed through ANCOVA. The results of the analysis indicated that CSLP enhanced self-efficacy, motivation, and academic achievement; however, since this study was conducted within a short period of 10 weeks at a certain region, it is not certain whether the results could be maintained for a long period of time. Thus, it is necessary to conduct a longitudinal study to obtain consistent internalization of self-directed learning strategy.