What can you access with Apple ID?

Okay so I just started driving and my dad is using the "Find My iPhone" App to track where I'm. We do not share the same apple ID but he knows my apple ID and password. I'm wondering if he is able to access my iMessages, photos, other apps, etc. And can someone help me out with this? I'm not a bad kid but I don't like being watched like a hawk and I never have before.
Thanks.
Basically asking, aside from the app, what can he access solely from having my apple id and password?

I went to the source: hope this helps http://support.apple.com/.../kb/HT5616