Lambda Legal, the ACLU, and the ACLU of Oklahoma have brought a legal challenge on behalf of three transgender students to S.B. 615, which bans all transgender students in Oklahoma from using school restrooms consistent with their gender identity.
https://lambdalegal.org/case/bridge-v-oklahoma-state-department-of-education/#:~:text=Lambda%20Legal%2C%20the%20ACLU%2C%20and,consistent%20with%20their%20gender%20identity.