Survivors of the Sandy Hook massacre are torn between celebrating their high school graduation Wednesday and remembering their 20 classmates who lost their lives in one of the deadliest school shootings in U.S. history.

Lilly Wasilnak, 17, said graduation always seemed so far away “but now it’s here and you’re ready but I think we can’t forget that there’s a whole chunk of our class missing.”

Wasilnak joins Newtown High School seniors walking across the stage as they embark on the…