The school will have an asbestos management survey if pre-2000, but it may only include accessible areas. That will lead to a risk assessment, and a management plan.
Staff, contractors and visitors to the school should be made aware of the presence of asbestos if relevant (they might want to pin displays up, drill holes, etc).
If asbestos (or suspected) is exposed then the area should be cleared and expert advice sought. The area must be made inaccessible until declared safe by experts. I’d want it compartmentalised, e.g. locked room, but I’m not an expert.
Some asbestos is encapsulated in floor tiles and low risk, other types are far worse and will easily become airborne. Some material looks like it contains asbestos, but doesn’t
We used to update our survey annually, with photos to compare to previous years, and major works would trigger a more in-depth survey that covered less accessible areas that might be disturbed.