kindergarten building; preschool building
Refers specifically to the physical building or facility of a kindergarten (幼稚園) or preschool (保育園), not to the institution as a whole.
新しい園舎は木のぬくもりがあふれる設計です。
The new kindergarten building is designed with the warmth of wood.
園舎の裏庭で子
The children are playing in the backyard of the preschool building.
Compound of 園 (えん, 'kindergarten, preschool') and 舎 (しゃ, 'building, house'). The reading えんしゃ follows standard on'yomi.