I wanted to learn more about Starr and found this.

On June 21, 2007, in an opinion authored by Chief Justice John G. Roberts, the court ruled in favor of Starr's client, finding that "a principal may, consistent with the First Amendment, restrict student speech at a school event, when that speech is reasonably viewed as promoting illegal drug use."[41]

Morse v. Frederick
Ken Starr - Wikipedia, the free encyclopedia

The very short synopsis is the kid got detention and sued because he thought his freedom of speech was taken away. It made it to the supreme court. Imagine that.