[Not2B]

Sounds like you need a sit-down kind of conversation. In other words, figure out what the student expectations and the mentor expectations are. That should help. Also, a team handbook and/or misson statement should help out some, as long as people follow it. Our team is rather informal, and our team handbook reflects that (it's only 6 pages.) Doesn't need to be huge.

Also, keep in mind that your mentors might be trying to teach you, and not take over. They might be having so much fun that they don't realize what everyone is feeling. Talk it over, and it should help.

It also helps to remind everyone of the team goals. Example - our team makes it well known that our goal is to teach stuff, even if it means not winning. But sometimes we need to remind everyone that winning isn't everything - but it's a nice reward.