Dec. 17, 2012— -- intro: Twenty bright first-graders were gunned down Dec. 14 at Sandy Hook Elementary School in Newtown, Conn. Six school staffers, including a teacher and a principal, also ...

Sixty Newtown High School seniors graduate on June 12 as survivors of the Sandy Hook Elementary School shooting in a class of 330 students. "There is a whole chunk of our class missing," said one.

Sandy Hook shooting survivors graduated from Newtown High School on Wednesday without 20 of their classmates who were massacred in one of the worst school shootings in US history.

The Sandy Hook school shooting, when Adam Lanza shot and killed 26 people, is the deadliest mass shooting at a U.S. elementary school, and the Uvalde, Texas, shooting is the second deadliest to date.

Twenty-six people -- 20 students and six adults -- were shot and killed at the Sandy Hook Elementary School in Newtown, Connecticut on December 14. As details continue to emerge, CNN presents a ...

This is the second deadliest elementary school shooting since Sandy Hook in 2012. The parallels to Sandy Hook are chilling and unavoidable. In 2012, Adam Lanza killed his mother, then drove to ...

The mass shooting at Robb Elementary School comes nearly 10 years after the deadliest school shooting on record, where 26 people were killed and two were injured at Sandy Hook Elementary School in ...

As is typically the case in the wake of tragedy, many rumors began to swirl after the 14 December 2012 shootings at Sandy Hook Elementary in Newtown, Connecticut, which left 26 victims dead at ...

Twenty-six lanterns are seen in the village near the Sandy Hook Elementary School following a shooting that left 26 people dead, 20 of them young children, in Newtown, Conn., Dec. 15, 2012.

A look back: Sandy Hook Elementary School shooting On December 14, 2012, a disturbed young man shot and killed 20 children and six educators in one of the worst mass shootings in U.S. history ...

Twenty-six were killed after a man packing heavy firearms embarked on a ghastly killing spree at Sandy Hook Elementary School on Dec. 14, 2012, claiming the lives of 20 students and six teachers.

Today marks 10 years since the mass shooting at Sandy Hook Elementary School in Newtown, Connecticut. More than two dozen people, including 20 children, were killed. CBS News correspondent Nikki ...