general education school; non-specialist school
Refers to a regular school that does not specialize in a particular field such as vocational training, arts, or special education. Often contrasted with 専門校 (specialist school) or 養護学校 (special needs school).
This area has both general education schools and specialist schools.
He transferred from a general education school to a technical high school.
養護学校 is a school for children with special needs, whereas 普通校 is a regular school for general education.
Compound of 普通 (general, ordinary) and 校 (school). The term is used in educational contexts to distinguish general schools from specialized ones.