When students post on social media from off of school property, are those posts protected as free speech? The US Supreme Court will issue a ruling that decides that question before adjourning for the summer. When Brandi Levy, a junior varsity cheerleader at a Pennsylvania high school, learned that she didn’t make the varsity cheerleading team, she did what any teenager might—she blew off some steam on social media. On a Saturday, from a neighborhood convenience store, she posted a short, profanity-laced rant on Snapchat expressing her discontent with school and cheerleading, with an image...