u/EpikCharcoal63

I've seen many self taught steel string guitarists and they reached a good level. From actual prodigy's and just friends or mutuals I know.But almost every classical guitarists I've heard about always has a teacher, why is that? I haven't heard of a really really really good self taught classical guitarist at all. I don't know much about classical but if I were to guess it's something like polishing technique. So when you started self taught and went to a teacher how did it go? How much did you actually improve? I'm not saying self taught guitarists are bad, I'm just curious on why do much classical guitarists have teachers.