Definition
The number of school based on the level of education and type of school.
A school building is a building unit that has been built, and made to be used as a school, is used or not yet used for school activities.
A school building that is used as a factory, dormitory and others is not considered as a school building. On the contrary a building that was previously not used as a school building but has been renovated/adapted and is used for school is considered as a school building.