Grade Rage

The over-dramatic anger of a student or student's parent when the student "who always gets As" doesn't get an A on an assignment. Usually in the form of an email addressed to someone else and cc'd to the teacher, parent/student will demand teacher be fired for ineptitude in teaching.

Did you hear about Karen's grade rage? Her son got a 9.5 on a 10-point homework assignment, and she wants the teacher's head on a platter!