"with the yardstick you measure, you will be measured."

These are wise words.
My daughter has this saying; "We take it from whoever it comes." (•ิ‿•ิ)

My stepson is sitting with the same problem you had in high school, and I told him the same, just ignore the teacher and smile politely.
Fingers crossed that it will work.

Good luck with the contest, and thank you for the invitation!