noun
higher technical school
Historical term for a type of pre-WWII Japanese technical college, roughly equivalent to a present-day technical college or institute of technology.
彼の祖父は戦前に高等工業学校を卒業した。
His grandfather graduated from a higher technical school before the war.
Compound of 高等 (higher), 工業 (industry/engineering), and 学校 (school). The term reflects the pre-war Japanese educational system.