Really? You can’t see that modeling is in order here? But you aren’t doing the modeling, as you would do with your students. No, you are the student and you need to learn from your co-teacher.
Bottom line: If you don’t admit that you have some things to learn in the area of classroom management (and willingness to make changes), nothing is going to work. Including detention.
You’re just lucky that you have access to a teacher who can show you a thing or two – many teachers have no way to leave their own room when they need to see an example of a better way of doing things.
It all comes down to setting expectations, of course, but I find that many teachers don’t understand what that really means. They think that they can just say what they want and the kids will do it, upon fear of punishment. Ha!
As I cover in depth here, setting expectations means modeling and then practicing until they get it down nearly perfectly. For example:
“My expectation is that when I'm talking you're not. We're going to practice that until you have it down, so I want you to turn to the person next to you and talk about your favorite school lunch.”
Give then 15 seconds, then say:
“Ladies and gentlemen may I have your attention please.”
Or any other method you choose. I’ve always just preferred to ask for attention rather than clapping or counting down. And when you don’t get an immediate response (which you won’t):
“Oops! You didn't meet expectations. Let’s try that again. My expectation is that when I'm talking you're not. I want you to turn to your partner and talk about your favorite dessert. Go.”
Playing the game to win
So far, you‘ve been playing a game with them (and losing). The game is called “let’s disrespect the teacher.” Resetting expectations in the proper way restores this respect.
And any time behavior slides – the next hour, day, week or month, doesn’t matter – stop and reset, then practice again.
It is not a teacher’s job to get children to like them. It is her job to get children to respect the classroom learning environment.
And they won’t like you for doing it. They’ll love you.