Originally Posted by Ephemeral_Being
You can always collaborate, even on seperate teams The only advantage would be cheaper team registration at local events.
I believe teams have to all be from the same school to get registration discounts. The MSU x581 teams all used to be numbered 1581, and got discounts as a result, but then MSU was told to give each school its own number. The x581 teams no longer get mass discounts like we used to (although the clubs with multiple teams still get their own discounts, like 3581D and 3581E).