Case Study: Clayton County Fire Department achieves reliable hiring of versatile, EMT-ready firefighters with Wonderlic

Clayton County Fire Department - Customer Case Study

Clayton County Fire Department, serving about 259,736 residents in Riverdale, GA with 300 full‑time firefighters and 15 administrative staff, needed firefighters who do far more than fight fires. With 70–80% of calls being healthcare-related, recruits must become EMTs, learn quickly, and make high‑stakes decisions with little information—creating a hiring challenge to identify candidates who can be trained and adapt to dynamic situations.

Clayton County adopted the Wonderlic Personnel Test to assess cognitive skills, learning ability, and decision‑making. Backed by research and Department of Labor–aligned scoring, the test gave Chief Mark Trimble the reliable measurement he needed to select trainees who can be trained and retrained quickly, improving hiring confidence and job fit.

Clayton County Fire Department

Mark Trimble

Clayton County Fire Chief