You idiot.
The school is not a ‘homeowner’, and the students aren’t ‘guests’. The parents paid for that education, and the student excelled. If you want to think in terms of ownership, the school belongs to the parents and students. Schools are being paid to provide a service. Schools must meet the expectations of parents and students, and they must not attempt to eliminate our rights.
Well, you may be correct, at least in the sense that I presumed you would be able to follow a simple and obvious elementary school analogy.