Classroom management is really difficult.
Op if your Dc are suffering yes talk to the teacher.
However i will also add to the thread that the likelihood of children with additional needs in the class is high, echp's are regularly refused.
The year before my ds was diagnosed with adhd a difficult child to manage- sitting on his own didn't work - teacher said he would get up and disturb the whole classroom, he was sat next to the next disriptive child - he also found other biy distracted him more so probably distracted the class more.
He wasn't aggressive, a bully or naughty but he was really struggling in school.
I think what is really lacking from this thread that for my ds it was difficult, he felt upset when in trouble, didn't understand why he couldn't behave like the other children, he actually wanted to learn.
Teachers are been asked to manage lots of challenging children with in many circumstances definitely not enough Ta support in the classroom.
My ds is now medicated and much calmer in the classroom however he also can feel upset, find it difficult to get on with his work if he feels he is in the wrong seat.. try putting that in a seating plan.
I actually think the parents of the quiet hard workibg kids don't actually care, they woukd have the more challenging children just given up on and removedfrom the class given this is actually very sad given most if these discussions are on primary school children