If I've received scholarships that are from non-profit organizations, do I have to claim them on my taxes? And how can I tell for sure if they're non-profit?

I'm trying to see if I qualify for the American Opportunity Tax Credit and/or Lifetime Learning Credit. I've never claimed any portion of it, and I'm in my 3rd year of college. I've had scholarships and pell grant that have in one way or another covered all my expenses. (I may have had to pay out a couple hundred when all was said and done.)