Mahanoy Area School District v. B. L.

In 2017, B. L., a high school sophomore at Mahanoy Area High School in Pennsylvania, was cut from the varsity cheerleading squad. Frustrated, she posted a photo on Snapchat with vulgar captions expressing anger at the school and cheerleading. The post was taken off-campus on a Saturday and shared with about 250 friends. School officials learned of the post and suspended her from the junior varsity cheerleading team for a year, citing violation of team rules. B. L., represented by the ACLU, sued the school district, arguing the punishment violated her First Amendment free speech rights. The case ascended through federal courts, ultimately reaching the U.S. Supreme Court, which examined whether public schools can regulate off-campus student speech that occurs on social media.

On June 23, 2021, the U.S. Supreme Court ruled 8-1 in favor of B. L., holding that the school district violated her First Amendment rights. Justice Stephen Breyer wrote the majority opinion, finding that while schools may have some authority over off-campus speech in limited circumstances—such as severe bullying or threats—B. L.'s vulgar social media rant did not justify school regulation. The Court refused to set a broad rule, instead emphasizing that off-campus speech is typically the responsibility of parents rather than school officials.

The central dispute focused on whether the Tinker v. Des Moines precedent, which allows schools to regulate speech causing substantial disruption, extends to off-campus student speech, particularly vulgar social media posts made outside school hours. The case questioned the scope of school authority over students' digital lives and the application of First Amendment protections in the modern internet era.

The landmark ruling clarified constitutional limits on school power over students' digital lives, drawing a protective boundary for off-campus online expression. The decision was celebrated by free speech advocates and student rights organizations as a critical safeguard of First Amendment liberties in the internet age. It established that schools cannot act as always-on speech police over students, while leaving room for intervention in cases of genuine threats, cyberbullying, or academic dishonesty. The ruling influenced school district policies nationwide and prompted debates about balancing student expression with maintaining safe, orderly learning environments.