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school (educational institution for primary or secondary education)
私は学校に行きます
I go to school
学校の授業は楽しい
School lessons are fun
Can refer to elementary, junior high, or high school depending on context
In casual conversation, '学校' is often shortened to 'がっこ' (gakko), especially when talking about elementary school.
Use '学校' in formal writing or when referring to the institution itself. Use 'がっこ' in casual speech about daily school life.
From 学 (gaku, 'study') + 校 (kō, 'school')
In formal contexts, often refers to compulsory education institutions. In casual speech, may be shortened to 'がっこ' (gakko).