My daughter has been a student with Master O for nearly four years now. His energy and attitude is perfect for young students as well as adults. He has never allowed her to work below her ability and is almost constantly challenging her in new ways. What I have come to love about this instructor is he has never appeared to use the buy a belt system. Instead he moves students up to the next level when they are truly ready to move. While this may seem slower than some schools I feel it has given my child more confidence because she knows she really earned the promotion.