This study examined the effects of emotional intelligence and entertainer idolization on school life adjustment of middle school students. For this study, questionnaires were administered to 300 first graders attending three different middle schools. The results were analyzed using correlation and hierarchical regression analysis with SPSS/PC window program. The results were as follows. Firstly, general trends of emotional intelligence showed a slightly higher than average score. The score of entertainer idolization was relatively low and the characteristic factor score was higher than the assessment factor score. For school life adjustment, the factor having the highest influence was relationship with friends. Secondly, the most influential factor on school life adjustment was emotional regulation, followed by academic grades, emotional recognition, emotional expression, and empathy. In conclusion, the level of entertainer idolization in middle school students was moderate. The important influential factors on school life adjustment were emotional intelligence factors and academic grades. In particular, emotional regulation was found to have the greatest influence.