Everything I can say is: it's watchable, not everyone is going to enjoy.
It's quite GENERIC (magic school and shit), the story HAD a good start, and if you like FAN SERVICE (hentai tits jokes everywhere) you'll LOVE this series.
BUT what is WRONG with the plot after half the series? We lost every reason to watch it after some episodes. Also, there's such a BAD plot twist with "Hijiri" that I will consider not even taking the second season to my "watch list" anymore...
SPOILERS: they were supposed to SAVE Hijiri, not FIGHT her for stupid reasons...
THIS IS A SOULLESS ANIMES. EMPTY. DRY. But has some good humor at least...