Don;t do anything dumb, legally you cant do anything with the info and if you did injur his career or position in his community he might have action against you and rightfully so.
Bottom line is, this is a business and you cant act like this.
Anything less is childish, and it furthers their view of us in the long run.
So yeah go email the principal, get the guy fired, what will that do for you?
Possibly his discipline as a mentor in your youth, drove you to succeed today.
Just grin and know inside you won.
