HILLS Adventist College has been a part of The Hills community for more than 50 years.
It started in 1961 as a single-teacher primary school and expanded to two classrooms in 1965.
A spokesman for the school said further expansion occurred in 1970 and 1978, and in 1996 a large building project added a new library, computer room, classroom and reception areas.
"Hills Adventist College caters for children at all stages of schooling, from early learning through to year 12," he said.
"The Early Learning Centre opened in 2006, and the expansion to secondary school commenced in 2008 at the Castle Hill campus and then at the Kellyville campus.
"The school continues to develop with permanent classroom blocks under construction and great facilities already in place.
"The school takes a personal interest in each student and family, and the dedicated and professional staff care about the students' individual learning and school experience."
The spokeman said the college provided Christian education in a caring and nurturing environment focused on helping kids develop a passion for learning and a strong values system which aimed to provide a foundation for the rest of their education and their future adult lives.
"Each year, senior students can get involved in overseas service projects to continue to develop their values and a desire to make a contribution to the community," he said.
"Adventist education is the second largest private school system in the world."
The school also operates a private bus service with pick-up points throughout The Hills to give parents security and peace of mind.
Details: Call 9851 5100 or visit hills.adventist.edu.au.