This study analyzed college students who participated in Korea Collegiate Essential Skills Assessment(K-CESA) in 2016. Among six essential skills of K-CESA, the cause and status of continuing decrease in communication skill over time will be analyzed. The purpose of this study is to investigate the characteristics of subordinate factors of communication skill, and identify whether there is difference in students’ essential skill according to individual factors(gender, grade, department, high school, college admission method, career plan after graduation, latest average grade of all subjects, home economics, and financing method).