WESTFIELD, N.J. — Westfield Public Schools held a regular board meeting in late March at the local high school, a red brick complex in Westfield, New Jersey, with a scoreboard outside proudly welcoming visitors to the “Home of the Blue Devils” sports teams. But it was not business as usual for Dorota Mani. In October, some 10th grade girls at Westfield High School — including Mani’s 14-year-old daughter, Francesca — alerted administrators that boys in their class had used artificial intelligence software to fabricate sexually explicit images of them and were circulating the faked pictures.