School levels AgeGradeEducational establishments 14-153 (9th)Junior high school/Lower secondary school (中学校 chūgakkō) Compulsory Education 15-161 (10th)Senior high school/Upper secondary school (高等学校 kōtōgakkō, abbr. 高校 kōkō) 16-172 (11th) 17-183 (12th) 17 more rows