bad teacher

In my high school there was a teacher that did not like teaching. He was probably 126 years old and he was unpleasant to everyone including the staff. On the first day of class he always announces to the class that he does not believe that there is such a thing as an "A student", and in the entire time I was in high school there was only one person that did get an A in his class. Due to his opinions, anyone who would have been a Valedictorian would not reach their goal, because he was so arrogant so that even if the answer was the exact same as what the book had said he would mark it wrong.