O'Neill got up from her desk and began lining up her students to evacuate the building. When she opened the front door of the classroom moments later to enter the hallway, the intensity of the smoke caused O'Neill to deem it too dangerous to attempt escape down the stairs leading to Avers Avenue on the west side of the building. She remained inside the classroom with her students to await rescue. The fire continued to strengthen, and several more minutes elapsed before the school's fire alarm rang.