Might have the roads wrong. Get off 71 at exit 140 (cardinal center) go north to the first st route cross road make a left and there is a church on the left with a sign that advertises CCW classes. And the neighboring house has a sign criticle of the church having classes. At least they had those signs up last year.
Class in Newark this weekend found here its the same class my wife and I took.
Here is a link to the instructor at the Centerburg Conservation Club here Here is a link to the other Newark Instructor that I know. She's also on the NRA board of directors if that matters to you.
There are others in the Central Ohio area, but those three people I know and are the main ones I recommend.