This study investigated the effectiveness of a short‐term career exploration program for enhancing career maturity and quality of life in Korean adolescents. It further tested causality between career maturity and quality of life defined as school satisfaction and subjective well‐being. We used a cross‐lagged panel design to examine the links among career maturity, subjective well‐being, and school satisfaction, measured both before and 4 weeks after a career exploration program for 224 Korean middle school students. Study results indicated that 4 weeks after the program implementation, there were significant increases in career maturity, subjective well‐being, and school satisfaction. A significant causal relationship from the pretest score of career maturity to the posttest score of school satisfaction was found. Results suggest that the implementation of a short‐term career exploration program designed to increase career maturity also significantly promotes school satisfaction. Limitations of the study are discussed along with suggestions for future research.