Austin Heights International School adopts the British school curriculum and syllabus for both the primary and secondary schools, and prepares the students for all examinations set by the Cambridge International Examination Exam Office (CIE). Within the IGCESE/O-Level Curriculum, English is the medium of instruction. Austin Heights Pre-school uses the British curriculum as well.
Austin Heights Private School uses the Malaysian Ministry of Education curriculum, i.e. KBSM for Secondary and KBSR for Primary, KSSR for Primary 1 in 2011 and prepares students for all examinations set by the Malaysian Ministry of Education. In line with the National Education requirements, Austin Heights Private School uses Bahasa Melayu as the medium of instruction. However, English, both spoken and written is given emphasis to meet the aims and objectives of the school.