The Parent/Teacher Association (PTA) was formed in June 1988. The objective of the Association are:
To promote the close association of home, school and church for a wholesome, positive Christian education for the pupils.
The Association shall pursue this objective through educative, religious, social and caring activities.
Membership of the Association shall consist of parents and guardians of pupils attending Turnbull High School and teachers of Turnbull High School.
Meetings of the Parent/Teacher Association are held monthly in Turnbull High School.