Vandalia-Butler CSD is #5714.
School District codes, listed by county, begin at page 41 at http://www.tax.ohio.gov/portals/0/forms/ohio_individual/individual/2017/PIT_IT1040_Booklet.pdf
Every Ohio tax filer must enter the school district code of the district he resides in; even if that district does not have an income tax.
If your still not sure what district you are in, enter your address at:
http://www.tax.ohio.gov/Individual/LocalTaxInformation.aspx
