And an entirely valid rant it is! This has driven me berserk for years--Catholic schools at every level educating children from every religion under the sun--but not in religion while children of practicing Catholics wait their turns for admission.
Reason #47 why we give our children a Catholic education at home!
True story - my cousin's husband, a former U.S. Marine now on his 2nd civilian career (he was too soft-hearted for security work) is the Principal of a Catholic school in the Philadelphia area. He's not Catholic; in fact, they don't attend any church at all!