The institution is divided into three parts. Each functions largely independently of the others; but at the same time facilities are shared. The College is situated in Campground Road at the main campus, and a small portion of this land is used for the Pre-Preparatory School. The Preparatory School is nearby.
The Principal of the Diocesan College is Mr Grant Nupen. The school council has recently appointed Mr Vernon Wood as Headmaster of the senior school (College). Mr Greg Brown is the headmaster of the Preparatory School and Noell Andrews is Head of Department for the Pre-Preparatory School. Fr Terry Wilke is the Chaplain of the school, an important role as the school is an Anglican Church School.