Meet the Team

Executive Team

Craig Monaghan

Principal

Craig Monaghan is a highly experienced Educational Leader with over two decades of international school leadership experience across multiple countries, including New Zealand, Egypt, Germany, Portugal, and China. Throughout his career, Mr Monaghan has led schools that follow a diverse range of curricula, including International Baccalaureate, National Curriculum of England and Wales, IGCSE and A-levels, New Zealand National curriculum, International Primary Curriculum (IPC), and the American Middle States Curriculum.

In addition to his extensive leadership experience, Mr Monaghan has also served as a Council of International Schools accreditor and is a member of the Headmasters’ and Headmistresses’ Conference (HMC), a prestigious UK body of Heads from Eton, Harrow, and King’s, to name a few. His experience working in vastly different contexts has enabled him to develop a wide range of leadership skills and a formidable reputation for school improvement and growth.

Mr Monaghan is driven by his strong educational beliefs, which prioritise the needs of students in the Schools he leads. He works tirelessly to ensure that the best possible academic experiences and wider opportunities are provided to students under his care. With his wealth of experience and dedication to educational excellence, Mr Monaghan is an invaluable addition to any School community. We are incredibly fortunate to have him with us, and we look forward to benefiting from his leadership for years to come as we strive to become a School of choice in Perth.

Julie Wall

Head of Primary School

Julie Wall is an experienced Primary School teacher who migrated to Australia from England and has extensive experience in teaching, leadership and curriculum in both countries. She also has experience working with children with disabilities and proven expertise in formulating programs that develop skills and engage students to become involved in their learning. Julie has a strong, genuine passion to not only motivate her students, but to teach them how to learn in a manner that is relevant, meaningful and memorable. She continuously upgrades her skills in emerging digital and design technologies to develop and implement ICT programs.

Siza Macdonald

Head of Secondary

Siza is a dedicated educator with a remarkable career spanning over three decades in leadership and teaching roles. In that time, she has served across multiple leadership roles within government and independent schools. In 2024, she joined St. Andrew’s Grammar as Head of Learning Area in Science. Siza is an active contributor to the educational community, serving on the Curriculum Advisory Committee (AISWA) and the STAWA Committee, and co-authoring “Exploring Chemistry ATAR” for Years 11 and 12.

Siza’s commitment to professional development is evident through her mentorship of aspiring leaders and her engagement in pedagogical training. Recognized for her excellence, Siza received the Exemplary Teaching Award at the Western Australian Education Awards in 2010 and has consistently achieved high results in WACE Chemistry examinations, contributing to her schools being recognized as Top Achieving Schools.

Beyond academics, Siza fosters strong relationships to create an environment that promotes excellence across all areas of the school. She is committed to transforming St. Andrew’s Grammar into one of Western Australia’s top secondary schools, emphasizing a culture of positivity, high standards, and continuous improvement. With a clear vision for the future, Siza aims to leave a lasting impact by elevating the school’s profile and supporting staff and students.

Leon Maag

Head of Policies, Compliance, and Educational Services

Mr Maag has been working in the education for over 20 years in Western Australia. He completed his Bachelor of Education in 2000 from Curtin University. He has taught primarily in the independent sector and has worked in regional locations throughout Western Australia most prominently in the south-west. In 2006 Mr Maag was offered a scholarship to further his study in education and completed a Graduate Certificate in Education. Mr Maag has worked in Education Leadership since 2007. His positions have included Learning Support Coordinator, Christian Service Learning Coordinator, Head of Year and Head of House and Head of Wellbeing (Secondary) here at St. Andrew’s. Mr Maag has worked closely in the Senior Management Team here at St. Andrew’s Grammar making his move into this position seamless and personally rewarding.

Katia Monaghan

School Registrar

We are incredibly lucky securing Mrs Monaghan’s services after experiences at a top European school. Since joining us in May 2023 she has brought significant marketing and admissions experience to our school. She has brought a unique blend of warmth to prospective families, being a strong advocate to whom we are as a school whilst also bringing professional business ethos.

Since joining she, and her team, have taken us from a small school of 700 students to where we will be starting 2025 with 870 students, with waitlists in several cohorts, an incredible job! With 167 new students for 2025 alone, we are moving from a school in demand to one that will be increasingly selective and one which will soon be very difficult to secure a place.