Interschool Academic Demathlon

Interschool Academic Demathlon is a math contest.

History
Before the contest helped Martin, Lisa to study after she had become worse on math. The winner of the contest become Shelbyville. After the prize ceremony, Lisa discovers that they had all answers written on their pens and she tell it to Martin. Martin asks Lisa if thy should turn them in, she tell him she had a diffrent idea but she's too late, Bart had already doing a prank on them.