Hi,
several things went wrong with this import:
- every school should have only one object with amenity=school. This tag should be on the area of the whole school and not on each building

- many objects got tags like "coordinatesDescription-coodinates-Accuracy" which should not be in OSM

- the link to the mandatory documentaton of the import is missing

- "source=Maxar Premium Imagery" can't be correct

Please read the OSM import guidelines: https://wiki.openstreetmap.org/wiki/Import/Guidelines