I would tag it as any other school or university (amenity=school or amenity=university); and make sure to include: operator:type=religious and religion=muslim (and a denomination tag if appropriate). If its name includes ‘madrasa’, include that in the name= tag.
Discussion
Comment from dominikschwind on 6 February 2023 at 08:12
I think you can just tag the building with
building=madrasa
Comment from dominikschwind on 6 February 2023 at 08:15
It has been used, but not very often: https://overpass-turbo.eu/?w=%22building%22%3D%22madrasa%22+global&R
Comment from spiregrain on 6 February 2023 at 12:06
I would tag it as any other school or university (amenity=school or amenity=university); and make sure to include: operator:type=religious and religion=muslim (and a denomination tag if appropriate). If its name includes ‘madrasa’, include that in the name= tag.
See:- * https://wiki.openstreetmap.org/wiki/Tag:amenity%3Dschool * https://wiki.openstreetmap.org/wiki/Tag:amenity%3Duniversity * https://wiki.openstreetmap.org/wiki/Key:religion