All former students of Cranbrook School are eligible to join the Old Cranbrookians' Association, if they meet either of the following criteria:
- They attended the School for at least four terms and completed their school education at the School; or
- They completed at least eight terms in the Senior School, and then moved to a school outside NSW by reason of their parents' or their guardians' moving to another state or overseas.
The OCA currently enjoys a membership of over 4,000.
Membership of the OCA provides you with a mailed copy of the tri-annual OC Magazine, which keeps you up to date with reports on recent events, archival articles, old boy announcements, and other information of interest. Membership also grants you full access to the OCA website, which allows you to communicate and network with other old boys, remain informed of upcoming events, and access the OCA's member, mentoring and business directories and jobs board.
Members are invited to advise fellow old boys who are not members of the OCA of the many benefits of participation in the OCA, and to recommend that they become members.
Application forms may be obtained by contacting firstname.lastname@example.org or 9327 9418.
Life membership: $500.* Single payment includes a silk OCA tie.
Ordinary membership: $55 per annum.
* Subject to variation depending on alumni year.