There are basically three alternatives for claiming an education credit or deduction:
The American Opportunity Credit (AOC)
The Lifetime Learning Credit (LLC)
The Tuition and Fees Deduction (TFD)
You are only allowed to claim one of these for each student. TurboTax will select the one that is (usually) best for you.
https://www.irs.gov/Individuals/AOTC
https://www.irs.gov/individuals/llc
https://www.irs.gov/pub/irs-pdf/f8917.pdf
