Yajikita Gakuen Douchuuki

Shinokita Reiko and Yajima Junko are second-year high school students who travel from school to school fighting bad guys, ninjas, yakuza and corruption. At this high school they encounter a secret ninja order and a corrupt administrator, as well as a tragic death in the distant past. With the help of Kotetsu, a skilled ninja, they set the school to rights, but not before leaving several broken hearts behind.

(Source: AniDB)