Hierarchy classification:

1. top of the aat hierarchies
2. Agents Facet
3. Organizations (hierarchy name)
4. organizations (groups)
5. institutions (organizations)
6. [institutions by activity]
7. educational institutions
8. schools (institutions)

Anotations

Scope note:

Educational institutions for children, having facilities and structured program activities devoted to play, often convening only in the summer; established as an emergency measure during World War I; used both as places for children of working parents and as places for parents and teachers to study the playing habits of children.