Phil Castles joined Grace Community School in 2025 as the defensive coordinator for the football team. A native of Tyler, he has worked in several East Texas school districts. He has served as the athletic director and head coach at Henderson, Corsicana, Chapel Hill, and Elysian Fields. He has also held the position of defensive coordinator at Texas High, Sulphur Springs, Winnsboro, Gladewater, and Beckville. Phil is married to Suzanne Castles, and they have three children: Cameron, MicahAnne, and Calan. The Castles have been members of First Baptist Church of Henderson, Texas, for over a decade.