Fla. Stat. § 1003.4505

District school boards, administrative personnel, and instructional personnel are prohibited from taking affirmative action, including, but not limited to, the entry into any agreement, that infringes or waives the rights or freedoms afforded to instructional personnel, school staff, or students by the First Amendment to the United States Constitution, in the absence of the express written consent of any individual whose constitutional rights would be impacted by such infringement or waiver.