Zoey 101 (2005)

S02E52 Faking the Grade

In an unexpected twist, Kuzco ends up with straight A's on his report card, while Chaca disappointingly scores all D's. As a result, Kuzco is placed in the SD class, where he struggles to keep up and fails at the various games they play. Meanwhile, Yzma has acquired a set of new potions that reverse effects. Just as she's about to put one to use, chaos ensues when the potion unexpectedly inverts the floor and ceiling, leaving Yzma and Kronk trapped on the ceiling.