In Morse v. Frederick, the U.S. Supreme Court affirms that free speech rights for public school students are not as extensive as those for adults. In this case, a student held up a banner with the message “Bong Hits 4 Jesus,” a slang reference to marijuana use, at a school-supervised event across from the campus. The principal removed the banner and suspended the student for 10 days. The majority opinion says that although students have some right to political speech, it does not include pro-drug messages that may undermine the school’s mission to educate against illegal drug use.