Shodan (black belt level) or greater level instructor.
“Large School Chief”
Dojo-cho with more than 100 registered students.
“Area Chief” or “Regional Director”
4th Dan or higher Renshi, and the top Chief Dojo-Cho for the area or for the country.
7th Dan or higher in Ninpo and Jujutsu, Kyoshi, Bojutsu Okuden, Bikenjutsu Okuden, Naginata Shoden, Asayama Ichiden Ryu Menkyo, Takagi Yoshin Ryu Okuden Menkyo
With Soke’s permission, a Shidoin can teach anywhere in world and conduct check tests up to 3rd Dan.