juku

thumb|right|LEC, one cram school company in Japan thumb|right|The Nagoya office of Yoyogi Seminar

Gakushū juku (; see cram school) are private, fee-paying schools that offer supplementary classes often in preparation for key school and university entrance exams. The term is primarily used to characterize such schools in Japan. Juku typically operate after regular school hours, on weekends, and during school vacations.