I agree with what a lot of people say about the watered down state of tkd in the US. Many traditionalists would say that Korea is the only place to learn real tkd training, and point out Korea's tendency to dominate international competition. There was a fighter a few years ago who won the NY state competition, US national competition, then went to Korea and got a lot of his ribs broken. Seeing how they founded the art, it only makes sense that they have preserved its essence better than we have.
Anyways, many martial arts (in general) that make their way to the US, have a reputation of being commercialized and watered down. Fortunately, unlike some other arts, we tkd people have tournament unions such as the USTU, which are pretty good at sorting out tae kwon do from tae-crap-do. If you have a school that is producing national USTU competitors, you are probably doing something right. I'm sure you all have tournament organizations in your fighting styles - but i'm just talking about tkd right now. There are other tkd tournament organizations, such as the AAU, but USTU has the toughest reputation and you see the difference when you go to the tournaments. Not to say that these fighters are up to Korean standards, but the USTU helps to eliminate the "McDonalds" quality tkd schools ( from even entering). Where is this going? I dont know... I kinda have to pee right now so I'm in a hurry. Basically that tournaments help raise the standard for tkd schools. Overall though, something as widespread as tkd should be in much better shape by now. The bast teachers and practitioners I've seen have been from Korea.
Some tkd schools claim to be more focused on the moral values and family benefits of tkd training, not focused on competing. These people should go start some kind of YMCA family picnic club and leave TKD out of it. It's a money scam, and most of their tkd students would get their a$ses handed to them in a fight.
I've trained at many different schools, and have seen the good, the bad, and the ugly. That's another thing common in tkd, people switching schools a lot...no loyalty. After all, it's hard to respect a master who, for a certain amount of money, will give you a black belt in under two years and is more aggressive at collecting bills and fees than most insurance companies.
Some people argue that tkd doesnt produce good grapplers... well of coarse it doesnt! Just like bjj is a great grappling art, but will not, by itself, produce a fighter with good punches and kicks. If you want to be a well rounded fighter, you can either try to seek out a "complete style", or simply cross train in different styles. Living in these times, we have the luxury of being able to do that.