Here’s some more information about Big Brain Academy on the Wii and what kind of online features it will have:

“When you create a student profile, you can choose any one of your Miis to represent you in the game. Additionally, WiiConnect24 works with Big Brain Academy, allowing Miis based on student-profile data from other players to appear in your game. You can then compete against those Miis in any of he multiplayer modes, so you probably won’t have trouble finding other brains to compete against.”

I like how you can ‘compete’ with other people, but we still need some solid information on Nintendo’s online plans.  Hopefully sometime soon.

Source: Insider Forums