We don't do all of the clubs at my school. All we have is a competition team. It's an extra fee...for that you ghet real hard training, 2 hours the 1st and 3rd Saturday of the month and 1 hr the 2nd and 4th Firday of the month. The classes are devoted entirely to the fine poitns of Olympic style sparring. Each years we invite students who look like they've got skills to join, but it's open tyo asnyone who wants to try and is willing to work hard.
Anbother school I know of had a BB club, then they also had a leadership club that had extra classes to teach things like pedagogy (teaching skills), class management, curriculum design and school management. This was for folks who were being groomed ot hlep run the school or who were interested in running schools of their own someday. they also had a special club for weapons work as well as a demo team club (think xma). each of these was an extar fee and class and were in place to meet the desires of subsets of the student body interested in such things.
Peace,
Erik