How someone's brain living with adhd can perceive information from outside world that could turn impact performance in class?

The overall performance of a child in class is marked low considering all prospects of his behavior and personality

Explanation:

A person suffering from ADHD usually suffers from problem like lack of attention, hyperactivity and impulsivity. Most of the children in pre school lack attention/concentration in class and thus most of the time looks wandering, challenged to grasp details and diverted.

Children with hyperactivity/impulsivity fidge or squirm on their seats or they are always in a "go on" situation irrespective of place where they are. they talk endlessly and had trouble in waiting for their turn.

Thus, the overall performance of a child in class is marked low considering all prospects of his behavior and personality

I have ADHD, myself and life goes rough when it comes to class because alot of people like to be in smaller classrooms because the small classroom environment is alot nicer and you wont have to worry about someone having to rush you up and also notice that when someone does have adhd they have to talk alot of medicine and stating that its pretty difficult.