school (institution dedicated to teaching and learning)

(colloquial) current boyfriend

everything

(slang) Alternative form of 彼氏 (kareshi, “boyfriend”)

everyone, one and all

(historical) elementary school, national elementary school

school supported by a pro-North Korean organization

school supported by a pro-South Korean organization

school grammar / (specifically) Japanese school grammar, based on Shinkichi Hashimoto's work and now universally employed in Japanese schools and dictionaries.

school for special needs