Describe the worst teacher you ever had.

The worst teacher I ever had was a math teacher in high school named Mr. Cheng. He was so mean to me, he would pick and make fun of me when I didn’t know the answer to questions in class. I dreaded going to this man’s class day in and day out.  Plus he was not a very good teacher, I had a hard time understanding his lessons.
The worst part is I had him for two years straight for math class.   As a young student in junior high I guess I should have told my mom and ask for help. I didn’t ask for help from my mom, I just did my best and got through it.
Wonder if this experience is partly to blame for me not doing well in math as I progress through school. I had to work hard on my own and get tutors all through high school and college.  I struggled quite a bit with math all my life.
Who was your worst teacher you ever had?

I asked my husband what his worst teach ever was and he said his was Mrs. Louis, she was his teacher in 11th grade and taught him chemistry.  He did get his parents to help him and he got changed classes.