Amy

Amy (whose name was finally revealed in "My Fair Laddy") is a girl in Bart's class. She is a pale-looking girl (or possibly a different race) who has long hair.

Role in The Simpsons
Like Melissa, she isn't an important character but only used as a class filler.

Name
In "My Fair Laddy", Coach Krupt finally revealed her name when he bombarded her with a dodgeball. She squealed and was instantly knocked to the ground.