I really don't know if it's correct, because I think that teaching goes even worse this way, with such children who are constantly disturbing, shouting, not paying attention, etc. Before us, these children went to a special elementary school and the lessons were more peaceful , and we were able to concentrate more. Another surprise for me is the parents themselves, who have constant demands and "problems" and constantly complain about everything.
For us, these children still went to a special elementary school and the lessons were more peaceful, and we were able to concentrate more.