The Pajama Day Situation

Springdale Elementary is a typical, suburban New York elementary education institution that each January hosts a day called Pajama Day where each of their students get to wear their pajamas to school as well as any favorite toys,games,or dolls/stuffed animals that they love to play and sleep with,but on Pajama Day 2022 three armed men,one of whom carries a bomb around his neck,storm into the principals offices and soon orders the whole student body into the auditorium and hold everyone hostage as they deliver an anti-government screed. Will the FBI be able to get in and get all the hostages out before the gunmen can blow up the school or will some students find a way to escape before its too late?