Baka and Test: Summon the Beasts: Matsuri (2011)
OVA of Baka to Test to Shoukanjuu released and taking place before the start of the second series.
Stars:
Shouko Kirishima
Yuuko Kinoshita
Akihisa Yoshii
Kouta Tsuchiya
Minami Shimada
Mizuki Himeji
Yuuji Sakamoto
Akira Yoshii
Toshimitsu Kubo