In this study, the study ways of strengthening creative problem-solving capabilities of the college students were suggested by analyzing the project-based classes and the academic-self efficacy tests. In order to achieve the study goal, the relationships between the creative problem solving abilities and academic-self efficacies were examined and how the project-based classes affect to promote the creative problem-solving abilities and study abilities. For the study, the academic self efficacy test were conducted and the TTCT were conducted with 69 students and three professors teaching the project-based classes were interviewed. The study results were analyzed with the SPSS to find out if there is any relationship between the academic-self efficacies and creative abilities. Even though there was not any relationship between the two factors, the interview results showed that students with high self-efficacies and high study abilities tended to be more attentive and creative, and successful in completing the project. Based on the study results, information and knowledge about the project area play an important role in the process of producing creative ideas during the problem solving activities. Knowledge-based creative problem solving was suggested.