It's a mini-series. A spin-off of Baka and Test: Summon the Beasts. As such, you want to come in expecting just that. The jokes are all there, the animation style is perfect for a mini-series, and it follows the little things here in there from the manga that didn't make the cut of the main anime. Not much better you can ask out of a spin-off, it does its job, and it does it to perfection.