Yes and no. A large part of improvement I arrive at personally comes from taking a small amount of information given to me by a coach and applying it across the whole of my dancing, seeing how a principle I learned in one dance can be applied in all of them. So as a result, a little bit of information is a *huge* teaching moment for me. Quality is much harder to pin down than prestige or cachet. I would argue that these come at a price and are probably well correlated for a given geographic region. Case in point: the worst prospective teacher by my estimation charged double what the others I tried charged. The difference wasn't her teaching skill, it was her status as a former national finalist, while the other coaches in the area are still making their names in the Rising Star category.