Santa Fe High School opened to students on Tuesday, the first day of school since a teenage gunman opened fire on his classmates and teachers on May 18, killing 10 people.

The school year ends this week, and students did not have to go back. Those who returned found students from other districts cheering in front of the school, and a security line snaking along the outside of the building.

Alyssa Lobue, a senior, said she needed closure. “I also didn’t want my last day of school to be a day where I had to run for my life,” she said. Megan McGuire, a junior, said she went back so she could accompany her younger brother. Other students said they were seeking some kind of normalcy, or a chance to sit with their friends.