Founded in 1871, the Kaisei Academy has produced a large number of noted alumni. Every year three hundred students are admitted to its junior high school, and one hundred students to its high school. The school's primary policy is 質実剛健 (Shitsu-jitsu-gou-ken), which means strong, simple, or spartan. The school policy is well represented in its school events such as an athletic meeting, marathon, swimming summer school, annual boat race with Senior High School at Otsuka, University of Tsukuba.