Students at PA schools (at least public ones) still have to have to meet graduation requirements for the state (Generally 4 credits of English/Math, at least 3 of Science/Social Studies, 2 of foreign lang etc…)
The school my D attended was a magnet from a variety of districts- but was contained within her home HS (which was a plan on our part- we moved there so D could participate in the arts program) but she still had the opportunity to take the full compliment of classes offered by the nationally ranked HS as well. Scheduling was the toughest part- there were a couple of classes D would have loved to take (AP Psych, photography etc) that didn’t make the cut b/c there was not room in the schedule