Pupil shoots to death 16-year-old girl and 14-year-old boy, injures 3 others before shooting himself in the head in Saugus High School in Santa Clarita

Kyle Kashuv met with Trump and spoke at the NRA, then had his spot in the Ivy League rescinded for making anti-Semitic and bigoted remarks two years ago

Teenage suspects are former students, not known to authorities; attack occurs in district adjacent to Columbine

Anniversary of 1999 high school mass murder marked days after teenager, whose obsession with the shooting set off school closures and a manhunt, was found dead