Alyssa Finch, who said she is a student at Franklin Regional High School, told ABC News a fellow student pulled the fire alarm during the stabbing "because he knew what was happening ... and he wanted the people to get out."
Seefeld, the police chief, also credited the assistant principal who he said tackled the suspect -- identified by relatives and students as Sam King.
"I can tell you he is being looked at, though, but he was not stabbed," Seefeld said of the assistant principal.
Cole Seymour, a junior at the school, described the assistant principal as "the kind of faculty member that every student in the building could go to."
"He went out of his way to make students feel comfortable and see how they were," Seymour told ABC News.
As the community bands together after a horrific morning, Rubino said he has seen groups of students flocking to the hospital to visit their injured friends.
"Some of students I spoke to were glassy-eyed. They were somewhat teary-eyed. They described confusion of the moment and just the real concern that they had for friends," Rubino said. "Prom is coming up soon, and that should what's on their mind and it's not."