I don’t think we can infer anything from the photo.
It is not on the fence or attached to it. It is on a strip of land outside of the fence. But there is a question about the strip of land that it is on. The ownership of these is frequently unclear in US.
Perhaps you have access to a database that can show that, to help the team?
Depending on that information, It is not near any entrance so I would say it would not interfere with people entering or leaving the school.