List of Black Belts of the Shotokan Ohshima COC (current or former practitioners):
| Rank awarded by Master Ohshima – France Shotokan | Ffkaraté Black Belt Grade | Diploma | |
| Jacques Dupré | Yodan | 5th dan | BEES1 |
| Richard Hiegel | Godan | 7th dan | BEES1 / DEJEPS |
| Fabien Deneuville | Godan | 5th dan | BEES1 / DEJEPS |
| Daniel Quéméner | Yodan | 2nd dan | DIF |
| Loïc Tamic | Nidan | 2nd dan | DAF |
| Philippe Jourdon | Nidan | 1st dan | DIF |
| Frédéric Vogel | Shodan | ||
| Gilbert Carreira | Nidan | 1st dan | DAF |
| Hychem Belarbi | Shodan | 1st dan | AFA |
| Sylvain Raynaud | 1st dan | DIF |
Some explanations on the progression in the grades of our school:
Shodan indicates a mastery of basic techniques. We are also interested in the look, the hikite or the stability.
Nidan corresponds to a higher technical level where the basic techniques are chained, with energy and lucidity. The fighting spirit is also essential.
Sandan, the practitioner must be calm. The grade pass contains a part of work on your knees. We also look at the sense of the ma (distance from the opponent).
Yodan is awarded to practitioners who have demonstrated an obvious capacity for commitment: to enter the attack, before the technique is fully deployed (projection, Irimi). We look at the unity of mind, fist and body. There are about 50 Yodan in France since the creation of France Shotokan (1964).
Godan is awarded for both technical and honorary reasons. It is awarded to people who have long followed the teaching of Master Ohshima and especially demonstrate very special qualities in his practice.The essential criterion considered is character. There are about thirty Godan since the creation of France Shotokan (1964). This is the highest grade of our school.