In the early stage of the Edo period, government by the military was changed into civilian government, Hanabata Kyojo Classroom, which was established by Mitsumasa IKEDA, the lord of the Okayama domain; in 1641 at the background of that change was the first hanko.
江戸前期、武断政治から文治政治への移行を背景に、1641年（寛永18年）岡山藩主池田光政が設立した花畠教場（はなばたけきょうじょう）が最初の藩校である。