About PA taxes. We have pensions from schools. Drop down reason for income exempt from state taxes lists PA School. Does this apply to registered private schools?

We retired from private Catholic schools registered with the State of PA.  In entering the income for 2017, the majority of it is from pension plans and 403(b) payouts from the school.  One of the state return questions asks for qualification of the income to see if it is exempt from taxes.  One of the drop down is PA School.  Does a private school registered in the state qualify for the exemption?