Here is how to see your Team Training rank courtesy of Whip1ash from the MLG forums:
Ok you need your gamertag linked to bungie to look at it. Go tot he main page and click "My stats" then you'll see the 3 tabs and click "halo 2 friends". then click something like team slayer or skirmish. After that at the end of your adress bar youll have hop=1(2,3,4 etc.) at the end. Change whatever number it is to 5 for team training and 6 for rumble training.
im 20 in TT and 9 in RT