Edna Krabappel is Bart's fourth grade teacher on the show The Simpsons. Edna is voiced by Marcia Wallace and is portrayed as a lonely divorcee. She previously dated Skinner, but now mostly will throw herself at anything that's remotely willing.
Now, I don't want you to worry class. These tests will have no affect on your grades. They merely determine your future social status and financial success. If any.Mrs. Krabappel
Bart: Mrs K, you have to get out of here. When was the last time you washed your hair?
Edna Krabapple: Hmm, two weeks ago...
Bart: Well, that's better than me, but still, you gotta get out