noun
post-war high school
Refers specifically to high schools established under the post-World War II education system reform in Japan, as distinct from pre-war institutions.
彼は新制高校の一期生として入学した。
He entered as a member of the first class of the new post-war high school.
Compound of 新制 (new system) and 高校 (high school), referring to the educational reform after World War II.