Gakkatsu!
Genres: Comedy
Type: TV, Episodes: 25
Aired: Apr 3, 2012 to Sep 18, 2012
Studio: NHK
Source: Original
Rating: G - All Ages
Synopsis:
In a fictional school, "Tender Tank" Rareko is constantly opening absurd yet strangely enthusiastic debates, this way creating a lively classroom life. Bringing up tremendous themes, she and her classmates exchange words like sword-strokes, and here and there even a profound remark is slipped in. 

A fun and informative debate comedy, packed into only five minutes each time. 

(Source: AniDB)