Timaru Boys' High School is one of New Zealand’s oldest state secondary schools, established in 1880 and located in the port city of Timaru in South Canterbury. From its early foundations as a regional boys’ school, it has grown into a well-regarded institution serving students from Years 9 to 13, combining long-standing traditions with a strong academic and co-curricular programme. The school’s campus on North Street reflects this heritage, with a mix of historic buildings and modern facilities supporting a broad educational offering.

Over time, Timaru Boys’ High School has maintained steady growth while preserving its traditional structure and identity. Enrolment has remained consistent, with the roll now exceeding 800 students, and the school continues to operate within New Zealand’s national education framework. A key feature of school life is its established house system—Dawson, Hogben, Simmers and Tait—named after former rectors and forming the backbone of interhouse competition across sport, culture and performance.

Facilities and student life are closely linked to the school’s strong sense of tradition. The Thomas House boarding hostel, first opened in the early 20th century, remains an integral part of the school, accommodating students from across the wider region and reinforcing its role as both a day and boarding school. The campus and boarding environment have evolved over time, with ongoing upgrades ensuring that facilities continue to meet modern standards while retaining their historical character.

Sport plays a central role at Timaru Boys’, with rugby in particular forming a key pillar of the school’s identity. The 1st XV competes in the Crusaders region secondary schools competition, while traditional fixtures against schools such as Christchurch Boys' High School and Otago Boys' High School highlight the depth of its sporting heritage. Beyond rugby, students participate in a wide range of interschool and interhouse competitions, contributing to a strong culture of participation and school pride.

Today, Timaru Boys’ High School continues to balance its historic roots with a modern educational approach, maintaining its position as a prominent boys’ school in the Canterbury region while producing graduates across sport, academia and public life.