as far as the getting them to listen part

In the schools here the way i look at it from 1st year to 4th (about 12-16ish) the teachers all pupils pay attention to even the ****wits are the ones everyones scared of. they don't necesarilly need to have a baseball bat hanging up above their desk for show but a teacher that pupils know will kick their ass into gear if they push it gets much more "respect" than one that has no onfidence and they can push around.

after that point people who are still in school are there generally because they want to be and the teachers don't need to bullshit them and can just treat them with the respect they desrve and it'll get returned.

your mileage may vary but we had a guy called doig who everyone in 1st to 4th year hated because he was so menacing and half the school would know when someone was in trouble with him cause he was so loud. he taught history and RE. most RE teachers we had were pushovers and the classes were shambollic but anytime he came in it went deadly silent.

I then had him for philosophy in 6th year and everyoen was dreading it but he treated us like adults, is one of the most intelligent men I've ever met, was about the furthest from aggresive you could get and was genuinely a really decent guy who didn't just see it as a wage. By the end of 6th year everyone who had him for a class was arguing whos table he was at at the prom.

he got the respect of every section of the school because he realised you had to use different methods to get the results.