I've always been against age discrimination, or any discrimination for that matter. Whenever possible, decisions should be based on the individual, not their age. When I was 15, I was taking classes with 17 year olds, and most of my friends were from those classes. When we wanted to go to see a movie, we had to go to the theater that didn't card for R-rated movies (well, we could've had a friend buy the ticket, but we sort of protested the carding theater, but I digress) As long as a test is standardized, there's no reason to care what the person's age is (well, unless it's standardized around age, but usually that's just so psychologists can study development). It's very important that the test be standardized. If you give a 13 yo an easier black belt tests, that cheapens the work other black belts did. However, if the 13 yo passes the same test as everyone else, don't belittle their work by saying their too immature for the rank. If the test is letting immature people through (be they 13 or 30) then adjust the test to keep that from happening (I don't know how exactly you test maturity in martial arts, but I'm sure some of the intructors here can offer good tips) I skipped a grade, and in addition to that, I was taking some classes with the grade ahead of me; I don't mean to toot my own horn, just to show that I have at least a little experience being graded with people older than me. When I took a test, I didn't get an easier test or bonus points because I was younger, but I also was never told that I was too young to understand something we were being taught. Also, I just turned 20 last week, when I woke up that day, I wasn't suddenly more mature than I was the day before. Sorry this was kind of jumpy - had a hard time organizing my thoughts today. edit: oh forgot to add an off-topic comment about the "doogie howsers" .. I saw a girl on WinTuition (game show) one time who said she skipped high school and went straight to college. However, later in the show she couldn't name any of the great lakes. Guess she should've gone to high school ... (well actually that's grade school info so I dunno). To make this slightly less off topic, this is analagous to people who really are too young to be black belts. There should be tests, and not age limits, to keep these people from advancing faster than they should.