There's a "me"... for "this is my grade we're talking about".
It's just not nice that some people have four hard-working members, while we effectively have two.
Yah. I guess the only thing to do is work for your own grade. Sometimes that means other team members ride for free... so be it.
It's a pretty safe bet that all the other groups have the same issues.
One thing I've noticed about committees... is they get set up whenever there's a project that the groupthink suggests might be important, but nobody really wants to do-- and for sure nobody wants to "own" it. They're great for putting stuff off until next year's budget. :-)