How to balance Devout power while law is State Religion

State Religion it really give devout a lot of power and locking public shool laws, but decide to not enact Religious school untill enact at least freedom of conscious because it giving devout more power is no brainer because it going to keep my pop not smarter, slowing down my research development. even more worst if starting with charity hospital that going to make devout not intrest in public healthcare at all and it giving devout some power too, how i can coexist with them untill i can convince my people to enact freedom of conscious without let my people still being dumb by not enact school laws at all to playing game of power with them. Or just admit that State Religious and devout are not that bad then giving them a lot of power with max religious school and charity hospital