In addition to her voice, she must also perceive in her class the voice of an assistant who is inadvertently distracting. I also felt another, unfortunately worse, atmosphere there. The teacher looked frustrated at times because she had to go to boys with special needs during class. The assistant didn't have much idea what the class was about (which is not his fault), so he couldn't help the boys with everything himself.
The teacher looked frustrated at times because she had to go to boys with special needs during class.