has anyone else's school locked down on tardies (usa)

today at my high school they were doing "tardy sweeps." which are supposed to be completely random

essentially every teacher locks their door and the principals look through every hallway for stragglers. if they catch ya you get 5 lunch detentions (😭)

and they set up a whole fucking SECTION of the cafeteria for lunch detention. there was like 15 tables

they also added a new bell one minute before the actual bell. i call it the prison bells.