Peggs Public Schools Superintendent John Cox attends a news conference Oct. 2 at Eisenhower International School in Tulsa. (Photo by Nuria Martinez-Keel/Oklahoma Voice)Editor’s note: This is the first of a series of profiles on the seven Republican candidates seeking the party’s nomination for state superintendent. Profiles will run in alphabetical order. In his fourth campaign for state superintendent, a longtime rural school leader aims to mak…