The School aims to develop independent, resourceful and tolerant young women, equipped with the personal, social, academic and technological skills necessary in a changing world. Mackellar Girls' High School is Manly Warringah's state high school for girls. The motto of the School, 'In honour bound' reflects an ethos and tradition based upon strong student achievement and welfare, and upon the premise that 'girls can do anything'. The School's reputation is well established as providing opportunities for students to seek excellence and to achieve their personal best in a wide range of curricular and extra-curricular programs. The school enjoys enthusiastic parent and community support through its P&C Association and subsidiary committees. Parent involvement in specific programs is continuous.