City of New York School Tax Credit

TurboTax is calculating these credits based on information you've input in the program. 

There's a New York City school tax credit (fixed amount) on line 69 of New York's Form IT-201, and NYC school tax credit (rate reduction amount) on line 69a.  Each of these are based on income information that you've entered into the TurboTax program. 

Based on the amount of the credit you're seeing, you appear to be eligible for the rate reduction amount.  This is the credit computation chart for a single person, as displayed in the Instructions for Form IT-201:

See Line 69 – New York City school tax credit (fixed amount) (NYC residents only) and Line 69a - NYC school tax credit (rate reduction amount) (NYC residents only) in the instructions above for more information.