Caroline Berrera was a new teacher at Springfield Elementary School. She debuted in "Teenage Mutant Milk-caused Hurdles".
She was about to become a recurring character as well as Bart's new teacher on the show, but this turned out to be false when she left to serve in Afghanistan and was replaced by Ned Flanders, who currently teaches the Fourth Grade.
Caroline Berrera is a beautiful, muscular woman and everyone loves her.
In "Flanders' Ladder", in a coma dream that Bart had, Mrs. Berrera was on the wall of Ned Flanders' late wives.
Appearances
Episode – "Teenage Mutant Milk-caused Hurdles" 
Episode – "Flanders' Ladder" (picture)