Gratitude Duel! Chronos vs. The Original Dropout Boy - S4-E11
Continuity mistake: When the students discover Crowler's class has been cancelled, in a wide shot, Syrus, Chazz, and Alexis are standing side-by-side. When the shot cuts, Syrus is behind Chazz, and Alexis is behind Syrus. (00:03:43)
