Commonly known as OGD. when someone is severly worried about their grade. There are 2 types. Type 1 never stops doing homework. Type 2 argues that their answers are correct when not. Its is very common for a student to have both types of OGD.
She had Obsessive grade disorder so bad, she stayed up till midnight doing homework.
Kendyll, who has OGD, got one wrong on the test and was very angry.