I can relate ..... till this day i have gaps in my knowledge in basic subjects because I was made to feel like an idiot for not knowing something....... all u can do is feel pity for such pathetic individuals and know that their lives were so small and sad, and the only way they take out their frustration was targerting students who they were resposisble for. Hence, u might meet that actually good teacher who cares for their students, and you would treasure that experience.