I'm a NQT, just started first job as a yr 4/5/6 teacher,done a year of supply so have had many experiences of challenging pupils/classes, but in this class, I cannot change them. In the morning they are generally focused and engaged, and I have a TA who is meant to be a class TA but I have her working with the one boy who will continuious call out, move around the classroom, roll on the floor, call other pupils names and generally disruptive if no adult is with him. But, once the afternoon hits, they take usually between 15-20 mins to settle and for the rest of the afternoon less focused and chatty and this boy becomes very disruptive and I can't focus on him as I have another 26 pupils to work with. His behaviour usually kicks off another 2-3 pupils and I've nearly had a couple of voilent outbursts and very rude behaviour. We've discussed rule, expectations, they know how to behave, we have rewards and sanctions. I know that the afternoon is usually a little harder as they're tired and worked up but even when we have PE, pupils who are usually good are playing up. I'm also aware that it is the first full week of term and it takes a while to settle, but I'd like to get this sorted as soon as possible so this doesn't continue. The afternoon is always runied as always having to moan or tell off someone and I was just wondering if anyone had any tips or ideas. As a phase group we are thinking of introducing a 10 min break outside during the afternoon to help, but so far I've not been able to do it as their unsettleness means I don't have time to do so. Any advice or tips would be great - just don't want to start dreading the afternoon of being in my class on my own!