For the longest time I did not train kids, or want to train kids. However, I changed my mind on this a couple of years ago. Sure, there are many disadvantages to training kids, but here are some advantages: 1. They soak up information like a sponge. They copy everything you do, and in some ways are easier to teach than adults. 3. If you have to pay the rent, kids help bring in lots of revenue. 3. They are the future...in URKA we have some senior ranking individuals who started as a kid and are now in their 30s and 40s. These are those 1 or 2 kids from a dojo that will stick with it for a lifetime and continue on the tradition. Obviously, it is up to each instructor and school as to what they want to do, but I would recommend not overlooking the benefits of teaching kids.