Yes I know what you are feeling, I had a horrible teacher,too!

It was an english teacher, so one day I asked her if 'cause, exist and she said "NO!", but I saw this 'cause in a lycris and I said to her that 'cause exist so one test I had one wrong and two not complets and she gave me 3 (0-5), that was not fair!

And I got really angry!!!

I hope that when I'll be a teacher that I'd never be like this, I'll always help my students!