St Catherine’s builds on its history and foundation as an exceptional girls’ school by providing strong leadership and strategic direction across both our teaching and general staff.


With an emphasis on providing strong leadership for the implementation of the St Catherine’s Strategic Vision, the Leadership Team is responsible for the operational needs of the School, ensuring our commitment to empowering and nurturing women of the future is evidenced through all our outstanding and dynamic educational programs.

Meet our Principal

​Mrs Michelle Carroll

An outstanding leader with a great passion for, and academic interest in, adolescent wellbeing, her focus is centred on creating and delivering an educational environment where girls’ individual strengths can flourish, and where girls are empowered to grow into confident, capable and healthy young women.

Meet our Head of Junior School

Ms Karen McArdle

As a leading educator, Ms McArdle brings to St Catherine’s a wealth of experience in areas of professional learning involving academic data analysis to monitor student progress and to inform teaching practice that enables the development of differentiated teaching and a personalised learning experience for all students. Mrs McArdle’s natural warmth, genial and friendly approach enables a vibrant school community to flourish with the nurturing of happy and engaged children.

Meet our Head of Early Learning Centre

Ms Sarah Bethune

Sarah Bethune is the Head of Early Learning Centre, a role which involves supports the children, families and staff in Campbell House, as well as teaching within each of our four learning rooms. With exceptional organisational and managerial skills, a specialised knowledge of child development and an innate ability to provide pastoral care to children and families, Sarah is a true asset to St Catherine’s Early Learning Centre.

Meet our Deputy Principal – Teaching and Learning

Mr Robert Marshall

Leading St Catherine’s School’s curriculum and academic programs, Mr Robert Marshall’s passion for analysis, strategies and continual improvement ensures the School is at the forefront of pedagogical practice.

Meet our Deputy Principal – Student Wellbeing

​Ms Merran O'Connor

As Deputy Principal of Student Wellbeing, Merran O’Connor oversees the St Catherine’s Wellbeing Program and works specifically with the Senior School Deans and staff in developing and promoting student wellbeing.

Meet our Director of Business

Mr Mike Zammit

Director of Business, Mr Mike Zammit is responsible for managing the financial, property and people resources which underpin the educational needs of St Catherine’s School.

Meet our Director of Student Programs

Mrs Gina Peele

Director of Student Programs, Mrs Gina Peele is responsible for coordinating Senior School programs and liaising with a range of Senior staff.

Meet our Director of Planning and Organisation

Mrs Pauline van der Poel

As Director of Planning and Organisation, Mrs Pauline van der Poel oversees the daily operations of the School, development of the School calendar and events in liaison with staff, PFA and Auxiliaries, working across areas of Risk, OHS and Compliance and the organisation of the staff teaching matrix and professional development.

Meet our Director of Advancement

Jacqueline Williams

Jacqueline Williams went from school libraries to classrooms, then galleries and recital halls, and back through the school gates again. She switched from teacher to fundraiser over 20 years ago and has loved pretty much every minute. Jacqueline believes that giving is an expression of a person’s relationship with an organisation. Her biggest achievement is raising in excess of $30 million for arts and education over her career. Her biggest ambition? To close the philanthropic gap that exists between funding boys’ schools and that of girls’.