Drummond sued in October 2023 to block St. Isidore in a legal action filed at the Oklahoma Supreme Court, saying he was duty bound to "prevent the type of state-funded religion that Oklahoma's constitutional framers and the founders of our country sought to prevent."

Justices will decide whether to allow an Oklahoma religious charter school to operate. It would be the nation's first religious charter school.

A decision to allow a Catholic school to become a publicly funded charter would profoundly impact American education, experts say.