Caveat: I'm assuming every thing you've said is true (I read
only the first page of this thread):
Your teacher would seem to be spineless.
It's up to you to take matters into your own hands.
Follow the hierarchy.
Form teacher to Level Head (Dean) to DM to
V.Principal.
At each meeting, take a note of the time and date of your
talking to them. Make them aware of this.
Your stand should be this: I am reporting a case of bullying to
you. I am willing to testify (in writing, if need be) as a victim.
Our school reportedly takes a serious stand on bullying. What can
you do about it?
Important: Try to have some suggestions ready. Would you prefer
him to receive counselling? Would you prefer to be transfered out?
Would you prefer HE be transfered out? - Having solutions to offer
shows that you've thought about the problem and they should to.
Good luck.
Do what is above mentioned.. Bullying is a rampant these days,
they should be stopped. so let him be gone. =P