Both my parents have been professional teachers, and both have come back with tales that would make your hair curl. But equally, they have had experiences which have left profoundly satisfying memories....
A favourite quotation of my father's was the definition of teaching, or education:"Education is the process of casting false pearls before real swine."
--- Irsin Edman
You need tenacity, determination, integrity and an endless sense of humour.
I would go for it.
It will be possibly one of the best teachers YOU'LL ever have.