The Old Herschelians’ Association is an active group of past pupils of the school. It is run by an enthusiastic and representative committee that works to foster a continuing interest in the school and its current events and facilitates networking amongst friends.

Membership is open to all past pupils of the school, regardless of whether they matriculated or not, and entitles one to be on the mailing list for the annual OHA Newsletter and to be kept informed of class reunions and current events at the school. Each class has one or more Circle Secretary whose task it is to keep the Hon. Secretary informed of news of her class mates for inclusion in the newsletter and to keep the database updated with regard to addresses, name changes, etc. Presently there are approximately 2400 signed up members of the Association.