ok. i can tell you this. even if you are bigger than your teacher, you will probably get your ass kicked. the thing is that as you get older, the more capable of a fighter you become. for example: i had a two 19 year olds start a fight with me a while back. they were messing with my friends little sis, so i stepped in politely and told them to back away. they were both bigger, faster and stronger than i was. well, needless to say, i handed their asses to them then walked her home. if you fight someone eho is a lot older than you are, you are in trouble. i am younger, faster and stronger than my dad is, but i would never fight him, he would wipe the floor with me.