Updated

The American Civil Liberties Union of Idaho is warning that a south-central Idaho school district's dress code is unconstitutional and must be changed.

The organization sent out warning Tuesday to all Idaho school districts urging them to review school dress policies to make sure they comply with constitutional standards.

The Cassia County School District is requiring all female students participating in the high school graduation to wear white or pastel dresses. Male graduating students must wear pants and a tie.

ACLU Legal Director Richard Eppink says schools that make a distinction between boy and girl dress codes are enforcing gender-stereotyping policies, which violate the state and U.S. Constitution.

Eppink added that the organization is waiting for a response from the schools before deciding if a lawsuit is necessary.