Shooter incident at elementary school in Uvalde, Texas - 19 children and 2 adults dead

Can't say I've ever tried that, do you need to shoot the deadbolt too? Otherwise seems like you're going to be doing a lot of kicking, assuming the doors swing into the room. Or does the door just slide out after the hinges are blown off (assuming deadbolt has some wiggle)?
Doors to school classrooms aren't built like bank vaults. The hinges and deadbolt are not gonna withstand a 12
gauge point blank for very long. Like Big -L said, you do whatever it takes to breach that door.