The Fourth Circuit Court of Appeals on Tuesday refused to rehear a case involving a transgender student which could impact North Carolina's transgender bathroom law.

The appeals court in April ordered a lower court to rehear a lawsuit filed by Gavin Grimm, a junior at Gloucester High School in Virginia who came out in his sophomore year. Grimm argues that the school board's policy that prohibits transgender students such as himself from using the bathroom of their choice violates federal civil rights laws.

The district court had ruled against Grimm.

According to Equality on Trial, the decision means that the school board could turn to the Supreme Court for review.

The ruling is likely to affect events in North Carolina, which is facing a backlash after barring transgender people in public institutions from using the bathroom that corresponds with their gender identity.

The Fourth Circuit oversees courts in five states, including North Carolina.