Unlike mtbikerinpa, we(bike mechanics) can get certified from every source there is and will not affect an experienced mechanics employability or income one bit. Hopefully if I spent a week at a school, I would learn something new. But if I were going to spend that kind of money, and in this industry, it WILL come out of you own pocket, I would choose a frame building class, where I could get my moneys worth (And as far as that goes, I have done quite a bit of welding, brazing and fabrication, but not much on stuff as small as bike frame, so even that would not be a new experience)