The House system and Deans are the backbone of student support at Dunstan High School. The school is divided into four Houses: Caples, Haast, Pyke and Rees. There is a strong inter-house competition which gives the older students the opportunity to provide leadership and support to younger students. The houses are divided into smaller groups called Tutor Groups that include students from all levels creating a family environment.
Each House has two Deans who monitor both the academic and social progress of each student in their care.