The particular class I was teaching had a bunch of white belts aged about from the youngest being 6 and the oldest around 12. The rest of the students were above that. Its usually tough to teach them katas and fighting techniques when their that young so we usually play teamwork based games and stuff with them before their old enoguh to learn "karate".

Hopefully it wasn't one of the brown belts since they are all above 15 years of age and hopefulyl potty trained