How do you change your networks on facebook?

it automatically put me in the atlanta network and i dont want to be in it...and i want to have my highscool as my network but it wont let me...how do you change it?How do you change your networks on facebook?
1. Sign into your account.

2. Go to 'My Account' (it's near the logout button at the top of the page)

3. Click on the tab 'My Networks'.

4. Search for your high school. The usual standard to get accepted into your high school's network is to have someone from that network friend you.

5. Go back to the 'My Networks' tab.

6. Click on 'Make Primary' in your high school box network.