Answer
You can check our membership here.
If your association isn't part of CASA and you think it should be, CASA is easy to join. You can contact us through our contact form if you want to learn more, or can reach out directly to your university of college's student association's president, the Chair of their Board, or your student representative on your student association's board or council, and link them to our recruitment page.
If your student association wants to see if CASA would be a good match, they can join as observers, for free, with no associated fees for 2 years while they consider membership.