A Texas high school sent a Black student back to in-school suspension for refusing to change his hairstyle, renewing a monthslong standoff over a dress code policy the teen’s family calls discriminatory.

The student, Darryl George, was suspended for 13 days because his hair is out of compliance when let down, according to a disciplinary notice issued by Barbers Hill High School in Mont Belvieu, Texas. It was his first day back at the school after spending a month at an off-site disciplinary program.

George, 18, already has spent more than 80% of his junior year outside of his regular classroom.

He was first pulled from the classroom at the Houston-area school in August after school officials said his braided locs fell below his eyebrows and ear lobes and violated the district’s dress code. His family argues the punishment violates the CROWN Act, which became law in Texas in September and is intended to prohibit race-based hair discrimination. The school says the CROWN Act does not address hair length.