I'm a year 5 teacher, and after October half term, we had a new boy join our class. I'd heard about his behaviour problems at his previous school (trying to pick fights with adults, throwing furniture etc.). But he settled into our class really well, with only one, not particularly serious, outburst, and other low-level behaviour - constant calling out, not settling, distracting other children etc. In fact he had settled in so well, it was decided we no longer needed high-needs funding for him. However, last week, after half term, he turned into the child I was told I was getting. He was an itching for a fight, accusing me in front of various people that I'd called him dumb etc (just to clarify, the first time he said this, I had asked him to stop talking in the line). Monday last week he threw his bag and shoes at me. Again, I think he was looking for the response - he could have easily hit me with them if he had actually wanted to, but they landed half way between us. Our SENCO was called down to deal with him, as I had to take the others to PE. This escalated the situation, mum was called in while we had 3 adults trying to manage the situation. He carried on like this to an extent all week, and on Friday we had to evacuate the other children. The police were called to escort him and mum home after he assaulted 4 members of staff, and his mum, threatening to kill his mum and himself. Anyway, yesterday he wasn't in, and we had a lovely day, with loads of fantastic word done by the others, because they had no distractions and the full attention of me and the TA. Today he was back in class, and I have felt like we are all walking on eggshells, trying not to "set him off". I'm trying to manage the low-level behaviour from him in the same way I would the others, but I'm aware that at some point, anything could result in another incident, and that the other children are suffering from it. I just don't know what I can do to continue being the person in control of the classroom and making sure that the other children get all the attention and help that they should be getting. Any tips for how to be on top of it from the get-go would be greatly received!