Is there a way to override the taxing school district number I pulled from the Ohio Department of Taxation because it is not recognized by Turbo Tax?

Cleveland Municipal CSD, # 1809, does not have a School District Income Tax (SDIT). That is, it is a non-taxing district. If you live in SD 1809, you should not be filing a SDIT return.

The city of Cleveland does have a municipal (city) income tax and is a member of the Central Collection Agency (CCA). You probably should be filing a CCA return. 

To verify or find out if you live in a school district or city with an income tax enter your address at: http://www.tax.ohio.gov/Individual/LocalTaxInformation.aspx

TurboTax (TT) does not automatically prepare a city return, you must initiate it. At the screen, in the Ohio program, titled 
 "A few things before we wrap up your state taxes"
      scroll down to Ohio City taxes. 
Or, later
"Your 2018 Ohio Taxes are ready for us to check"
    -Click Other situations
    -Scroll down to Ohio City taxes. 

TT cannot e-file an Ohio City, CCA or RITA return. It must be printed and mailed.

I actually find it easier to fill out a city return by hand or at the city, CCA or RITA web site, than to use TT. Things don't happen automatically and you need to know what you’re doing. The actual  CCA forms are easier to follow than the TT interview. 

http://www.ccatax.ci.cleveland.oh.us/

Thank you Hal! This is SO very helpful...yes I am filing CCA form. I didn’t go through this screen last year so I got confused. It may be that the filing has changed since last year.
Many many thanks!

Call your school district and ask for the correct number.