Portsmouth High School's 2015 graduates broke into a flash mob during their ceremony, and told everyone to "Shake It Off."

As WMUR reported class valedictorian Colin Yost lead his classmates, saying afterwards, "Oh my gosh, it was amazing. I could not have imagined it coming out any better myself."

Yost added, "We just wanted to do something that had a lot of energy and brought us all together as a class."

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The DeKalb school district is suing to recover money spent on cellphone lockers, plus money spent on implementing social media guidelines and hosting associated events, lost teaching time and to hire extra school counselors. (The New York Times file)

Credit: NYT