My wife spent about thirty years in the classroom as a volunteer mother, and a Teachers Aid in title I classes. She was very interested in your post. She says there are a lot of children that do not like how the drugs make them feel. Schools in California cannot legally force drugs upon a child. If the school system receives Federal Funding the school has to accommodate the child. Normally there is a program for this.
In a class room of thirty children the teacher has two minutes per child every hour. We all want our children to get individual attention, but do the math.
The loss of a teacher in a classroom has an emotional impact on the students. Parents in the classroom can help bridge this gap. I know from experience. I started school in a two room, one through eight school. In one school year we had seven teachers. In my class of fifteen, thirteen of us had to repeat a class. By the third grade we had a new school and teaching conditions improved. But we all paid a price in the long run. The two students who continued on had a mother who was well educated and worked in town for the County Schools. Her kids received a lot of support in the home.
Those parents who volunteer in the classroom help all the students and add value to the school. By assisting all the students your student does not feel picked out. In contrast there are times an adult has to set next to a day dreaming, bored student to help them focused. I know I spent my time day dreaming about hunting, fishing, and when school let out. Home schooling does not work in all cases. I have one grandchildren who have been home school because or parental concerns about who their kids will have to associate with. My wife because her background, her love, and a lot of smarts has made home schooling successful.
In many school districts being a parent volunteer is not easy. Even as a youth coach I was finger printed and a background check was done on me. I was comfortable with the process because it is designed to protect the children. The process cost the school money, and the candidate needs to be committed, not fly by night.
My father spent a great deal of time going over school work with a younger brother. My younger brother benefitted. This created a very tight bond between them. In turn he did not have a strong bond with our mother.