State tax filing

No, it is not a bug. Yes, you are correct, you cannot deduct high school expenses at the state level. Massachusetts only allows a deduction for college tuition. See 2019 Massachusetts Form 1 Instructions page 22.

To adjust this in TurboTax, follow these steps:

• From the left menu, select State>
• Continue>
• At Massachusetts, select Edit>
• You should see the summary screen, You've Finished Your Massachusetts Return.  Scroll to Adjustments and click Update
• You initially are going to have a lot of unrelated questions, but this will get you to an education expenses section where you can click none