I for one hate the term! It thrown around to loosely by to many people. If you do this you are a McDojo/McDojang.
I understand there is bad product out there! My son was a Poom belt at 8 and the vitriol that was thrown around was quite thick. A well known poster on this BBS said his instructor should be slapped.
It is almost 4 years latter and my sons has been in the Martial arts for 11 years total.
He is a 3rd Dan KKW ( had it transferred to Dan grade when he turned 15). He is also Shodan in Shotokan Karate.
Will test for 4th Dan KKW at 18 if his current development continues. He was a 3rd Poom before 13 so he is elgible at 18 for 4th.
Allot of people have questioned his credentials but never the people who know him as a Martial Artist! His work ethic and dedication are very high!
The word McDojo has been thrown in regards to my son because of his early development slash promotions. He has never attended a McDojang or McDojo!
I'm sure you will agree, however, that your son is the exception rather than the rule. He is an outstanding athlete with a very unusual dedication to the martial arts.
For contrast, I'll point out several "Black Belts" I've seen come to our Moo Duk Kwan school from others. Specifically, I'll mention one who came from a TKD school in Chicago. He was 12 or 13, and had been a 1st Dan for about a year. Our required forms are palgwae but a couple of us do train the taegeuks as well. He didn't know what forms he had learned. I asked him to show me one and he got about half way through taegeuk 1. He couldn't throw a proper punch. He didn't know the difference between a front stance and a back stance. He couldn't throw any kick other than a front snap kick with anything resembling proper technique. He sparred one our 9 or 10 year old yellow belts and quit after 30 seconds because it hurt (our lower belts do NOT spar with heavy contact, either).
This kid is far more the norm for "black belts" at his age, and based on him, I would consider the school that awarded him his rank a McDojang.
I'm not a fan of baby black belts in general, but I do believe that ages standards should be considered a guideline simply because there ARE exceptions.