Welcome to OSM! Sorry for asking: Did you know the difference between post box (see https://wiki.openstreetmap.org/wiki/Tag:amenity%3Dpost_box) and letter box (see https://wiki.osm.org/wiki/Tag:amenity%3Dletter_box). Can you please the operator of the post boxes?

Please also a look on https://www.OSM.org/node/234731605. This is a good (negativ) example between description and name of a object. A stop sign doesn‘t have a name.

Please inform your teacher!
