I've been wanting to buy a DVD set for a friend but not sure which is the right one. Her favorite episode has Spongebob writing an essay in school about what he has learned. And all he writes is the title "In this class, I have learned" and that's it, and his teacher passes him because it says he has learned. She tells that story to people all the time, but I've never actually seen it.

Does anyone recognize that episode and know what episode/season it's from? It would be the best possible gift I could get at this point. Thanks for your help!