How do you get a black belt from the club penguin dojo?

Do the following:

1. Go to the dojo

2. Talk to Sensei

3. Click, "Earn Your Belts".

4. Battle someone (do not EVER click X because you still get credit)

5. Repeat step 4 until all belts completed. To check status, click the card icon.

6. Talk to Sensei

7. Battle Sensei (It takes about 1-5 times to beat him)

8 CONGRATULATIONS! YOU ARE A BLACK BELT!!!! You can now access the ninja hideout. If you are a member, than you can play Water jitsu and Fire jitsu.

ENJOY!!!!!

just challange people and yeah