The Penleigh and Essendon Middle Girls School (PEGS) project is the final phase of the development of the East Keilor Campus. The aim of this ambitious building program was to provide a rich campus environment with high quality teaching spaces designed to respond to the needs of its distinct students. The form is derived the Mandelbrot Set, the image of which offers almost endless formal adaption; a metaphor writ large for the endless possibility of intellectual exploration and the human imagination. This formal strategy results in an architectural form that changes in scale and intensity revealing and concealing views, contains and describes interior and exterior space. The Educators at PEGS require large generous interconnected classrooms which are the backbone of their repertoire of spaces. In this project the ‘Mandelbrot form’ wraps this rational planning approach thereby adding spaces that are multi-use, collaborative and social, and with a rich spatial quality.