I had that system in mind way back in 95-96 when I was a freshman in HS. I had never heard of Grinnell but had vaguely heard of the _enver Nuggets of the 90 91 season and their system was spearheaded by Paul Westhead. I was enrolled at a small private Jesuit HS and the policy at their sports team tryouts was that there was no cuts. So by default every player that turned out for tryouts were gunning for the varsity and the ones who didn't make it were automatically relegated to the JV/Soph/Frosh/C team. We had 12 guys on varsity and 19 guys on that second team. But the fact that our coach liked to play a small rotation, of the 19 guys on the roster, 11 players were glued to the bench while the 8 man rotation played heavy minutes with strict ball control. Any deviation from the strict strategies that player or players were immediately chewed out in public and benched for a few minutes. That coach we played for was so rigid in his thinking (and he was in fact a brilliant coach) but he was stuck in the traditional purist style of basketball. I am shaking my head now on how the Grinnell System would've been so beneficial for us kids. It was a small HS of 119 students (9-12 grades) and none of us were even half good. We sucked naturally and the average height of that lower tier team was 5 foot 6. One quote of coach Arsenault Sr said, "why practice the way everyone does but become a mediocre version of them?" We had 19 guys on our team, we could've had 3-4 shifts of players we could've used to rotate non stop at games. Getting halfway decent at sprinting and rebounding and shooting 3 pointers (19 feet 9 inches) is much easier than learning the strict ball control of a purist coach. The System as played by Grinnell College or Greenville University is very valid. I am now sold on that system and champion it. The purists can eat a hot steamy one for dismissing that System.