Which episode is spoofed in this section of opening sequence? Apparently, the opening sequence in Azumanga Daioh spoofs different situations throughout the series. I can't recognize which episode this is from. (Click for full size image.)



Do you know which episode this animation spoofs?
It's from Episode 13, "Tactics without Guard / S / Midterms / Formation / Ability", specifically the Midterms / Formation portion.

Even more specifically, it's the 'Idiots' / 'Numbnuts' / 'Bonkuras' formation discussed when comparing midterm grades to the others (where their combined scores add up to 103, but Chiyo's and Yomi's are of course much higher).