Built of economical 2 × 4 wood and plaster, Jiyu Gakuen featured a central section with double-height volume and soaring windows facing south onto an open courtyard, with symmetrical wings on the east and west.

Myonichikan is also given a Japanese touch by Wright's extensive use of gray-green Oya stone (from Tochigi Prefecture) for pavements, columns and the lanterns standing in the corridors.

The buildings have such characteristics as extending horizontal lines to blend with the landscape, the Prairie School design, which can be seen in Wright's first golden age.

The auditorium, designed by Arata Endo and capable of seating around 300 people, stands across the street to the south of the site.

Along with Yodokō Guest House in Ashiya, the school is also the only other example of Wright's work in Japan to completely retain its original appearance.