According to this you may not have to take the class,
"A document that shows the applicant is an active or reserve member of
the armed forces, or was honorably discharged within the past six years,
or is a retired highway patrol trooper, or is a retired peace officer or
federal law enforcement officer and who, through the position, acquired
experience with handguns or other firearms that was equivalent to the
minimum educational requirements"
Here is a link to Ohio Attorney Generals Page and the CCW booklet they publish.
http://www.agohio.org/le/prevention/pubs/cc_booklet20070314.pdf
740-368-1890 is the number to the Deleware County Sheriff.