The origins of Hillcrest International Schools started with Hillcrest Preparatory School. It was established in 1965, by educationalist Dorothy Noad and long-serving government employee Frank Thompson. Hillcrest Preparatory secured its international school status in 1972, when it became a member of IAPS. Consequently joining a group of British Curriculum schools across the world. Concurrently, the idea was advanced for Hillcrest to expand its educational offering to include a Secondary School.