Kengyo is the highest rank among four court ranks given to blind people who belonged to Todo-za, which was a traditional guild for the blind, from Muromachi period to the end of Edo period.
検校（けんぎょう）は、室町以降江戸時代幕末まで、盲人の自治組織である当道座に属した盲人に与えられた四段階の官位の内、一番上の位。