Carey maintains a close relationship with its alumni body through the Old Carey Grammarians Association - OCGA. The OCGA represents an engaged and diverse community of alumni, made up of over 18,000 members across Australia and the world. In addition to regular reunions and social events, Carey alumni also have the opportunity to connect and engage through a broad range of initiatives such as; business and career sessions, sporting and performing arts, giving back through social impact, key speaking events and lots more.