Unable to answer "What surface does this road have?" – Service Road – https://osm.org/way/1498732238 via StreetComplete 63.0:

This is not a service road it's a footpath as per the photograph, Which also shows there are locked Gates as there is on the access to the service road and a chain fence of a similar style right around the whole school ground

Attached photo(s):
https://streetcomplete.app/p/337862.jpg