Morse v. Frederick, was a First Amendment student free speech case in which the Supreme Court of the United States held that a school 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.

In 2002, 18-year-old Joseph Frederick was suspended from the high school where he was a senior after he displayed a banner reading "BONG HiTS 4 JESUS" across the street from the school in Juneau, Alaska, during the Winter Olympics torch relay.