In a case that could have major implications for the American public school system, the U.S. Supreme Court is considering whether religious charter schools, which are taxpayer-funded, are constitutional.

The St. Isidore of Seville Catholic Virtual School v. Drummond case involves a 2023 decision by the Oklahoma Statewide Virtual Charter School Board to allow St. Isidore to join the dozens of charter schools in the state.

Oklahoma Attorney General Gentner Drummond sued the charter school board, arguing that allowing St. Isidore to join the public charter school program amounts to state-sponsoring of religion.

The Oklahoma Supreme Court ruled in Drummond’s favor, but St. Isidore is arguing before the Supreme Court that contracting with the state to provide free and public education options as a privately run entity does not mean its religious activities constitute “state actions.”