Since excess scholarship money can be treated as taxable income on your return, many students see their refund go down, sometimes by a lot, after entering a second or third 1098-T, when scholarships exceed qualified expenses. 

This is because the TurboTax program starts you off with the full standard deduction, which is subtracted from the income you’ve entered so far. You don’t get this deduction with each additional 1098-T you enter. This means subsequent 1098-Ts will appear to be taxed more, but what’s really happening is that you’re getting a more accurate picture of your income.

Hi, Thank you for your response!

My first 1098 T is my primary institution (full-time) and I receive all of my scholarships from this college.

My second and third 1098 T's are my part-time classes. I do not receive any scholarship/grants from these two colleges. But once I add my third college, my refund significantly drops.

Is that what is happening here?

Yes, that sounds like what's happening.  If you think that the figures might be wrong, I'd suggest that you go back and review the answers you entered for the education questions... just to make sure everything's correct.  Can't hurt...