5th Grader Game Time

This is the total of all your winnings across all play modes. Others have suggested three and out for the game mode to use but I just did homeroom and won five times. The game's not timed so use Google/Wikipedia to make sure you get the million dollars each time.

I have not played LIVE yet, but if your online winnings are included in this total, it'd be most efficient to knock these out online so you get the online winnings achievements at the same time.