WASHINGTON (AP) — Before the Supreme Court this week is an argument over whether public schools can discipline students over something they say off-campus. Fourteen-year-old Brandi Levy was suspended from cheerleading over a profanity-laced posting on Snapchat. Arguments are on Wednesday before a court on which several justices have school-age children or recently did. The case has its roots in the Vietnam-era case of a high school in Des Moines, Iowa, that suspended students who wore armbands to protest the war. In a landmark ruling, the Supreme Court sided with the students, declaring students don’t “shed their constitutional rights to freedom of speech or expression at the schoolhouse gate.”