バカとテストと召喚獣 ～祭～

This two-episode OVA picks up after the first season of Baka and Test, where Fumizuki Academy ranks its classrooms by test scores and lets students settle disputes in Summoner Battles fought by grade-powered avatars. A school festival gives the bottom-ranked Class F a chance to raise money for decent desks, and the stakes are personal: Mizuki Himeji's parents will pull her out of the school unless her classroom improves. Akihisa Yoshii ends up in a maid costume as the class scrambles for customers.