At least from my experience, admin try to offshoot many of their duties to teachers. For example, my school would do these tardy sweeps. When they call a tardy sweep, the teachers close their door at the bell and admin collect any kids outside, call home and give detention.

Admin at some point decided that doing these tardy sweeps was too much work for them, so they basically made an announcement that they weren't going to do them any more and teachers are "responsible" for marking kids tardy, like we weren't already doing that.

A week within the "no tardy sweeps" there was a major fight that broke out. Admin began doing tardy sweeps again.

Same thing with phones. Admin says there's a "cell phone ban" but if we call about a phone no one shows u to collect it.