 In 2010, the school opened the Early Childhood Education Centre (ECEC), catering for 3–4 year olds.Main intake years are ECEC, Year K, Year 7, and Year 11; however, if vacancies exist in other years, admissions can be made.Hills Grammar is affiliated with the Association of Heads of Independent Schools of Australia (AHISA), the Heads of Independent Co-Educational Schools (HICES) and the Junior School Heads Association of Australia (JSHAA).