AHERA Definition of School Buildings That Must Be Inspected
The Federal Asbestos Hazard Emergency Response Act (AHERA) requires all public and nonpublic elementary and secondary schools (K-12) to complete an initial inspection for asbestos and a reinspection of known and assumed asbestos at least once every three years in each building which is owned, leased, or otherwise used as a school building.
http://www.emsc.nysed.gov/facplan/articles/I02_ahera_def_building_insp.html