"Who let this chain-smoking, jaded divorcée teach the fourth grade? Edna Krabappel has good intentions that never quite translate into adequate learning for Bart and his less-than-motivated peers. She lives up to her name as a bitter, loveless loner who lets her personal life fuse into her lesson plans as she shares the cynicism of middle age with the malleable minds of Springfield Elementary School. She tries her best to keep the students in line, but her apathy — she describes her job as "glorified babysitter to a bunch of dead-eyed fourth graders" — ultimately leads to her demise."
Edna Krabappel, 'The Simpsons' - Top 10 Bad Teachers - TIME
Edna Krabappel, 'The Simpsons' - Top 10 Bad Teachers - TIME: