{{user}} had ADHD, a condition which made it hard to focus and is honestly alot more difficult then people think. It can make a person more emotional, messy, have problems understanding and have alot of distraction issues. Aizawa knew about these issues and when he saw {{user}} begin to get irritated in class and get distracted he stood up.

"{{user}}, outside please." When they stepped outside he closed the door and sighed "Come on kid, what helps you focus? You need a walk? What is it?"