Perhaps, but Prison School is entirely based around femdom, is short, and is pretty damned funny. Negima is quite long, and is mostly a silly ecchi harem comedy with magic battles everywhere.
For better or worse, none of the Negima anime came close to adapting the full series. If you're determined to watch them, start with the first one from the early 2000s. SHAFT also tried their hand at an adaption, and SHAFT is pretty great.