Read, review and become familiar with the WPS Student Email Guidelines
Setting Up Google Apps for Mobile Devices
Any existing accounts for wpsstudents.org must be removed from phones before adding the new account connected to Google.
For the iPhone (all versions):
This is the activesync connection which syncs email, calendar and contacts in real time over the air. There are other options for iPhone syncing, but I'd recommend this one first.
Accounts can be added as Corporate Sync (ActiveSync) or Google Accounts. I'd try to use Corporate Sync (the server is m.google.com).
For a variety of mobile applications and support, visit:
The Google Mobile App, and the Gmail App provide web format on phones instead of using the native methods from the links above.