Me, Peeking, and Guys' Friendship!
Failing in the previous encounter due to the strong defense, Akihisa, Yūji, Kōta and Hideyoshi plan another breakthrough by inspiring the males of both their own and the other classes to reach the girls bathroom. as the probing commences, the quartet comes into heavy resistance... particularly from the girls themselves...
Aired 12/08/2011EP 6 - Me, Peeking, and Guys' Friendship!

2011
Baka and Test - Summon the Beasts 2
Continuing from where Season 1 left, the story continues with a more in depth into the characters but with the same humor narrative as before.
(Source: Anime News Network)