"Negima" tells the story of Negi Springfield, a ten-year old Welsh prodigy who is sent to teach at Mahora Girls Academy. In addition to being remarkably intelligent and mature for his age, Negi is also a wizard hoping to find his father Nagi, also a wizard.
The series depicts the exploits of Negi and Class 2-A that he teaches. Without giving too much away it is an amazing series. It is funny, uplifting and highly enjoyable, with plenty of humour and feeling.
The characters are interesting, well-written and likeable. Even though the cast is quite large, the show does a fine job of giving each of them at least some time in the spotlight.
My only criticism is the use of 'fanservice' (underwear shots and the like) which I dislike. However this is only a very minor complaint and there isn't even that much of it anyway.
The final story arc in particular is very powerful, emotional and provides a great feeling of closure while still leaving plenty open to the imagination. The closing scene is one of the most beautiful I've ever seen.
All in all a splendid series that I highly recommend.