
Researching this school has proven to be a bit difficult. There are several Oak Grove schools in South Carolina, and, at least, two are in the Upstate.
The first Oak Grove School in Oconee County caught fire on February 10, 1908, and was destroyed (Keowee Courier, p. 5). Later that July, it was announced that J. L. Hamby and others would help rebuild it into a three-room schoolhouse.
There was an announcement a few years ago that the school would be restored. It doesn’t appear any work has been done on it.

The signs says,
Oak Grove School
Reunion
Every 2nd Sat. in June 5 PM
Pleasant Hill
Baptist Church
Info 636-0047