Duplicate URLs

Hi Everyone,

I’m wondering if someone can help me figure out this issue.

It seems after doing a site: google search that each one of my pages has a duplicate url attached to it.

For instance:

http://www.example.com/schools

is also listed as

http://www.example.com/?page_id=37

I’m not sure but I would think this counts as duplicate content or websites in google.

Does anyone know how to eliminate this problem?