From the perspective of a third grade teacher, in a great district, the classroom with “special” needs child and their adult aide who overtalks while a lesson is given is NOT conducive to concentration! A teacher explaining arithmetic must hold the attention of 30 kids—a feat in and of itself. I do not believe anyone benefits from a noisy, chaotic room during basic learning. This is not my story. I was told it. Add to this a suicidal youngster so the protocol requires teacher to exit in middle of lesson for a meeting with principal, etc.
My classes of 32 kids were quiet, respected our teacher, feared getting in trouble with authorities and parents. It was unheard of to interrupt a teacher's lesson. The vice-principal dealt with parents if necessary. We ALL moved through the years passing our tests, learning, and playing our hearts out during recess and after school. Hardly any homework in grades 1-6, too.