The Dalton School, now in its 102nd year, has had more than its share of unwanted notoriety.

On a cold February morning 12 years ago, the brilliant 17-year-old Teddy Graubard jumped out of an 11th-floor window at the school to his death on the East 89th Street sidewalk below. He was an ambitious athlete who apparently had cheated on a Latin test and been caught by the school’s invasive-technology department, which had been monitoring his laptop. A bunch of Dalton fourth-graders, going outside to play, were among the first to find his body.