Justin Perron rejoined the St. Mark's community in the summer of 2022. He serves as the Assistant Director of Athletics, Head Boys Basketball Coach, and Assistant Varsity Golf Coach. He loves the sport of golf and worked for five years at Quidnessett Country Club in Narragansett, RI in their pro shop and bag room.

After a short stint as a member of the L.E.O.S. in the fall of 2021, Justin spent two years at Northfield Mount Hermon School. At NMH, Justin was a house head, psychology teacher, and head coach of their Prep basketball team. Prior to 2021, Justin spent five years at Clark University and held a number of roles in their athletic department throughout his time. Justin has a B.A. in Psychology from Framingham State University and a Master's in Education from Providence College. Justin resides in the Main Building with his wife Lauren and their dogs, Duncan and Belle.