- Parent Community
- Parent Teachers Association (PTA)
- Board of Governors – comprised of representatives and nominees of school staff, parents, Old Girls, the Presbyterian Church and PTA
- Rangi Ruru Foundation – a group which oversees school investments on behalf of the Board of Governors
- Rangi Ruru Old Girls’ Association (RROGA) – an active group of former students
- Friends of Rangi Ruru – a social group of people, including past parents and staff, who have an interest in Rangi Ruru.