Hi CassCat, I think Board Cetification extends to Canada, but I'm not positive. It certainly is not a requirement to work with PWS, but rather extra proof that you are competent and specialized in your work with PWS. It's something very few SLPS go after, but certainly a valuable certification if PWS are a favorite client group. Best of luck in grad school, please feel free to pm me any time if you ever want to chat - I've totally been there. Also /r/SLP is a great resource too! I really only lurk on /r/stutter because I feel like I don't have much to learn and little to share, but your post made me want to reach out. I know several Canadian SLPs, you guys rock!