Help with locked doors?

Question

I was watching a movie (die hard: with a vengeance) and there's this scene where there's a bomb in a school and they are evacuating everyone but some kids not knowing there's a bomb in the school decide to go into a classroom that's unlocked and just mess around but then a janitor comes by outside the door and locks it and when the kids go and try to get out the doors locked from the inside as well so I was just wondering if that would even happen so I guess my question is DO SCHOOL DOORS GET LOCKED BOTH SIDES WHEN SOMEONE LOCKS ONE SIDE?

Answer 1

Lemon's got the right answer....by LAW, door locks in public places must be able to be opened from the inside.

Answer 2

That's Hollywood.  NFPA Fire Code regulastions require that all doors to public buildings to be operable from the inside.  Thats what the crash bars are for.

Answer 3

From what I've seen, you can always open the ones at school if your inside. But you'd need a key to get in. Otherwise so many kids would have been locked in over the years XD