noun
A festival held by a school, similar to 学園祭 but often used for elementary, junior high, or high schools.
See also: 学園祭
来週の土曜日に学校祭があります。
There will be a school festival next Saturday.
学園祭 is more commonly used for university or college festivals, while 学校祭 is broader and can include elementary through high school events.
Compound of 学校 (school) and 祭 (festival).