He is a poor teacher that gives grades for subjective assessment without feedback, and therefore it was impossible to do better because you never know his basis for assessment. He didn't actually teach or engage with the info. tech, class, but rather did his own work while we worked on assignments. In hindsight, I should have challenged his assessments, because it was indistinguishable from just randomly assigning marks.
Insecure bitter little bully who managed to turn what should have been an interesting chemistry curriculum for a 14 y.o. boy into a game of "matching wits with the bellend".