Four students were arrested at William Hart High School in Santa Clarita, Calif., on Sept. 8 after police allegedly located a firearm on one of the students, officials said. After receiving an anonymous tip of a social media post depicting a Hart High School student allegedly in possession of a firearm, the school immediately began the investigation with the Santa Clarita Sheriff’s department to ensure the safety of all students, principal Jason d’Autremont told the Santa Clarita Signal. Police quickly located the weapon and arrested four students—two males and two females. Three of the four students have been sent to juvenile hall in Sylmar and one was cited and released. “The three that were taken to juvenile hall should see a judge today, and he will make a housing determination whether or not they are going to keep them longer, or whether they will release them on some kind of …