Oh and another thing, My dojang officially lets 14 years old in as well, except I didn't go in when I turned 14, I did when I was 11, I asked my instructor and he let me. I was being distracted by the younger and older kids of the kids class and I wanted a more serious approach, with less kiddy games and more adult training. I did have the mentallity then. I went into the adults calls a month after I joined, when I got my second belt, orange in ITF Tae Kwon Do. Yeah it was fast, and I wasn't ready, thats why I wanted to go to the adults class, I didn't want my next belt until I know I am ready as well as my instructors. But once I went into the Adults class, I gained more knowledge of things, I was able to learn faster, I got the attention I needed and wanted (my adults class is very small). Everything was more focused and it was a twice as long of a class. That was three years ago, almost 4, 4 in November. And I am a Blue Belt, halfway to my brown. (might be red because my school is going through some changes). I was ready for the Adults class, and I'll take anything my instructors throw at me.