Hang on.
Is it 4 unilove bathrooms spread out in the school?
or
Is it 4 individual gender neutral bathrooms for 1 specific neutral gender?
4 unilove bathrooms spread out.
Not 4 bathrooms for 4 different non-binary genders (the term you're looking for). The latter wouldn't make sense at all and would be a waste of money.
By the by, dr_pepper doesn't know the full details so the school may actually be expanding and more toilets are necessary.