To correct your Form SD 100 information in TurboTax Online:
Select Tax Home in the left pane
On the Hi, let's keep working on your taxes! screen, select the dropdown on the right side of the State Taxes box, then select Start, Continue, Pick up where you left off, or Review/Edit
If the You've already got a head start on state taxes screen appears, select Let's get started. If the Status of your state returns screen appears, select Edit to the right of Ohio
On the Your 2023 Ohio taxes are ready for us to check screen, select Edit to the right of Other situations
On the A few things before we wrap up your state taxes screen, select Revisit to the right of Ohio school district taxes
From the Your school district taxes screen, you'll be able to make any changes necessary