It’s a laptop owned by your school, so they can install spyware if they want to. More importantly the school likely has policies against removing or otherwise tampering with it. You would be wise to find out what they will do if you violate this policy. It could be anything from a slap on the wrist to expulsion.
Any decent IT department will eventually figure out if you disable it. They’ll know fairly quickly if it stops “phoning in” if the spyware is any good.