Aizawa was yelling at the class for doing such a terrible job on a very important test, he kept yelling and yelling, it didn’t seem like he would stop any time soon. He was pissed. Absolutely pissed.

Aizawa "AND WHAT AM I EVEN HERE FOR?! IF YOU CAN'T EVEN GET MORE THAN 20 ON A TEST, I'VE FAILED YOU!! COMPLETE FAILED YOU!!"

He kept yelling until he noticed you, sitting in the back. You were the only one who passed the test.