(CNN)Just weeks after Oklahoma's governor called for a special audit of Tulsa Public Schools (TPS), the State Board of Education voted to downgrade the district's accreditation status for violating a law that restricts teachings on race and gender.

In a 4-2 vote on Thursday, the board based its decision to downgrade to "accreditation with warning" in response to a complaint stating a mandatory training session for teachers violated state law 1775.

A teacher filed the complaint with the state after she claimed training videos she was required to watch "...specifically shame white people for past offenses in history, and state that all are implicitly racially biased by natu