By Chris CasteelStaff writerccasteel@oklahoman.comThe U.S. Supreme Court’s decision in a Montana case on Tuesday effectively protected a scholarship program in Oklahoma that benefits religious schools. In a 5-4 decision, justices ruled that the Montana Supreme Court erred in applying a state constitutional ban on aid to religious schools to a scholarship program funded by tax credits. “The application of the no-aid provision discriminated against religious schools and the families whose children attend or hope to attend them in violation of the Free Exercise Clause of the Federal Constitution,” the U.S.