If the kids do not respect and fear their teacher.... A sub will have NO control of the class. Because they know the teacher will have no consequences when they get back. I have had half the students I had yesterday in other classes, yet they were terrible these past two days. The only two differences were... Different teachers and the two days before Spring Break. I've never had to shout at anyone as much as I did yesterday.... And I was a section leader in band for god sake. That's what we did was yell. I've never felt so disrespected in my life. Yesterday I can home and literally just broke down. In all my working life, those were the worst two days I've ever had... And I worked retail and fast food... It was to the point one of my old teachers who is an amazing human actually offered to trade classes with me by the end of the day. Luckily... In doing that... I had a wonderful threat and the kids were silent and read. Its like... You are 9th graders reading a modern English Romeo and Juliet.. Just snicker at the innuendos and let's do this... But nope they just blankly read... Not really paying attention. But my mom was subbing while this teacher was there, I've never had the teacher, nor do I know her. But she said that she never could get the respect or fear of her class.... And its the subs that suffer.