How different is a Catholic school from a secular one? Is it the theological perspective that bothers you? I object to the empiricism common in many science curricula, the deconstructionism prevalent in many English curricula, and the nationalism promoted by many history curricula. If you think Catholicism antiquated, do you object to teaching classical mechanics in physics classes, as if it were true? Perhaps we can get together and agree not to teach anything from any perspective, in which case the public wouldn't need to fund schools at all.