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

Japanese-language education for non-native speakers

base, basis, foundation, ground, root / (construction, architecture) foundation

grammar

six-year secondary school (type of school introduced in the 1998 revision of the Japanese School Education Law)

the Japanese language

school (institution dedicated to teaching and learning)

education

education

fundamental, basic