Years 7–12. The main high school is divided into the Middle School (Year Seven and Eight), Senior College Archdale (Year Nine and Ten), and Senior College (Year Eleven and Twelve). Each house group within a year has a tutor, and every year is managed by a year coordinator, and overseen by the Dean of Middle School or Deans of Senior College. There is also a nearby Junior School, also located in Wahroonga, which houses the Early Learning Centre, Transition and Kindergarten to Year Six. Each year, approximately two-thirds of the incoming Year Seven class at Senior School are from the Junior School, while the rest are drawn from schools in Sydney, from interstate and overseas, having passed selective entry examinations and/or interviews to gain an enrolment place. The school council is responsible for the school's governance. Glenn N Davies, Archbishop of Sydney, serves as its chair. Campus The senior and junior campuses cater for 1400 students in total from Transition to Year 12 (Higher School Certificate). The Junior Campus is located in Woonona Ave, Wahroonga. Poole House is the oldest building on the campus and features an after-school care and music centre with a number of music rooms for individual lessons and practice. The library, school hall and administration centre are housed in the same block as the junior years' classrooms. In 2002, a new Years 4–6 centre was built surrounding a grassy courtyard featuring an arts facility and a canteen. Sporting facilities include a large oval, outdoor pool, three tennis courts, 2 courtyards, two sets of play equipment and a human-sized chess board. An underground parking facility was built in 2007 with the kindergarten classrooms built above. The new Early Learning Centre was completed in January 2010. It includes a new Infants precinct and an Early Learning Centre for the youngest learners from birth to five years old. It is a seventy-place, coeducational centre providing long day care. Girls of the age of 5 are now able to enter the school in the Transition class (preschool age), where they are able to make the smooth transition from preschool to kindergarten. The ELC is run according to the Reggio Emilia principles. The Senior Campus is at a separate site on the Pacific Highway, and incorporates a number of facilities including a 350-seat auditorium, large assembly hall, Senior Studies Centre, Aquatic Centre and two gymnasiums. Other sporting facilities include 11 tennis