See this to me makes no sense. Logically if you have a good sub and you have positions open you hire that sub as an appointed teacher! Wouldn't it make sense to fill positions with good educators? I don't know where you're located but that's not the mentally in NYC schools. Sure we do have a sub shortage and we have our go to subs but the ones we have in our building are retired teachers. I've had friends that were subs and have had P's hire them or if they didn't have an open position the P's contacted other P's they knew and said to please hire this teacher on multiple occasions. Same thing has happened to teacher friends while they were student teaching. I've only known subs who didn't get hired for open positions because they weren't great and the P's just thought of them as "warm bodies" in the classroom.