Why doesn't your 'school' just stick to the terms and conditions of the official teaching contract instead of doctoring it to the disadvantage of its FT's by inserting trash like complaints from three parents would be grounds for dismissal.Why not make it 4 and a 1/2 plus a family pet....lol?
I don't give a damn if your school' is 'screwed over',as you put it,by a foxy louwai.I'm batting on the side of the employees,the FT's,that is!Obviously you have chosen to align yourself on the opposite side,the employers.

A piece of advice,jobseekers.Check you're offered the contract with the arbitration clause in it.If not,scarper!