As an alternative to the middle school model, some secondary schools divided their grades into 'junior high school' (years 7, 8, 9, and 10) and 'senior high.
A secondary school describes an institution that provides secondary education and also equivalent to junior high school in the U.S.); trung học phổ thông (abbr. THPT, lit. 'general middle school', equivalent to senior high school in the U.S.).