[MayfieldCardinal]

I think population in corbin is closer to 10K now.
The reason the numbers aren't figuring in your head is because of recipricol agreements. Corbin has hundreds of kids I'm their school system that live outside city limits in Whitley county as well as Knox and Laurel.
It's pretty much open enrollment and corbin is sitting in a perfect spot to pick and choose kids from the entire tri county area. Even if the recirpricol agreements didnt exist like the old days, kids could still pay tuition to attend corbin if they lived out of district.

It's what has worked for them for 100 years.

In addition, I have always heard that Corbin has excellent academics