The Department of Education announced it is investigating Denver Public Schools for changing a girl's bathroom into an all gender bathroom.

The probe comes after President Donald Trump repeatedly promised on the campaign trail to drive what he called “transgender insanity” out of schools.

Denver Public Schools called the decision to investigate the conversion of a women’s restroom into an all-gender facility as potential discrimination “unprecedented.”

The Office of Civil Rights is investigating a civil rights complaint alleging that the Ithaca City School District discriminated on the basis of race and color.

The federal Education Department says the move may violate Title IX, which prohibits discrimination on the basis of sex.