Negima!

Mahora Academy isn't your typical all-girls school-between vampires, robots, and magic, the students face more than just homework. As the new year begins, Class 2-A meets their latest teacher: Negi Springfield, a ten-year-old prodigy from Wales. But Negi isn’t just a genius-he’s training to become a master wizard, and this teaching job is his final test. If he fails and the girls discover his secret, he’ll be turned into a white ermine. With more troubles than students, keeping his cover might be his toughest lesson yet.