Our staff are guided by a unique Pembroke staff ethos and code of values and the team is committed to strongly supporting the aims of the School. They value the relationships that they form with students, parents and colleagues.
Each staff member's individuality is valued, knowing that different backgrounds and experiences enrich our School and the experiences of our students. Pembroke regularly advertises positions and welcomes new staff to continue to strengthen the capacity and diversity of our team.
A list of our permanent staff is available in our Staff List.
Biographies of our Senior Management team are included below:
Mark Staker (Principal)
Mark commenced as Pembroke Principal in July 2022. In accordance with the School Constitution he is an ex officio non-voting Board Member. Mark is also a member of the four Board appointed committees.
Mark is an experienced educational leader, with undergraduate and postgraduate qualifications in English, History, Communications and Educational Leadership. Most recently, Mark was Senior Deputy Principal at Wenona School in North Sydney where he worked closely with the Principal and School Board of Governors on all matters of school leadership and management, with particular emphasis on leading the innovative staff culture of learning.
Throughout Mark’s extensive career he has held many leadership roles across diverse areas such as Student Wellbeing, Professional Learning and Teaching and Learning. He is passionately committed to developing a school culture that values relationships and fosters personal excellence through continual improvement within a respectful and caring community.
Kym Lawry (Deputy Principal)
Kym has worked at Pembroke since 1993, apart from a year working as an Australian Volunteer Abroad in Western Samoa in 1996. Kym has experience working in the public, Catholic and independent education sectors. He has held many acting and substantive roles at Pembroke, including Head of Physics, Head of Science, Assistant Head of Middle School, Assistant Head of the Senior School and Dean of Administration prior to commencing as Deputy Principal in 2016. Kym has tertiary qualifications in physics and education.
Wendy Wills (Business Director)
Wendy commenced as Business Director at Pembroke in 2000. Wendy manages the School’s finance, business, administration, risk and governance functions, is Secretary to the School Board, a member of the four Board appointed committees and a Foundation Fellow.
Prior to joining Pembroke Wendy worked across manufacturing, banking, finance, housing and multimedia. She has qualifications in economics, finance, investment, management, governance and superannuation. She is currently a Trustee Director of NGS Superannuation, a member of the AISSA Finance Committee and Chair of Kathleen Lumley College Inc. Wendy is a Justice of the Peace (SA) and a fellow of CPA Australia, Australian Institute of Company Directors and Governance Institute.
Alexandra Piggott (Head of Senior School)
Alexandra commenced at Pembroke in 2005 and manages the busy Girton Campus, site of the Senior School, working with a range of staff and being responsible for 450 students in their final two years of formal education. She is an experienced teacher having worked in the UK, been Chief Assessor for the SACE and an examiner for the IB Diploma Programme. Additionally, she has contributed to textbooks and journals along with serving as the President, Treasurer and Journal Editor of the Geography Teachers’ Association of South Australia. Alexandra has an Honours Degree in Geographical Sciences and Master of Education – Leadership and Management.
Kia Sheidow (Head of Middle School)
Kia joined Pembroke as Head of Middle School in 2021 (previously Head of Middle School at Seymour College, Head of Middle School/Acting Deputy Principal at Woodcroft College). In addition to her success as a Head of Middle School, Kia brings many proven strengths and experiences to her role at Pembroke. She is currently completing a Master of Education Studies (Innovation and Change). She is an excellent Design and Technology teacher across Australian Curriculum, IB and SACE and blazed a trail with a number of female colleagues in the early 1990s to teach in the traditionally male-dominated school curriculum area of Technology. She is a Nationally Accredited Assessor in Australian Professional Standards for Teachers (AITSL) and can certify and assess teachers in the Highly Accomplished and Lead Teacher level. Kia is actively engaged in professional associations and, from time to time, specialist committee work. In 2019, Kia won the Adolescent Success - Middle Years Leader of the Year National Award. She holds Australian Sports Commission and South Australian Sports Institute coaching certification for softball, lacrosse and netball having played all these sports at state or club level.
Susie Sadler (Acting Head of Junior School)
Susie has been working in the Pembroke Junior School since 1991 in various roles. After working in a number of other schools, she began as a classroom teacher for Years 3 and 4 at Pembroke, before moving into the Junior School Head of PE and Sport role, followed by the Coordinator of Student Wellbeing role. She then moved into her substantive role as Assistant Head of Junior School (Student Wellbeing).
In her current role as Acting Head of Junior School, Susie values connecting with students and their families, and enjoys working alongside an excellent team of both teaching and professional services staff.
Susie holds a Diploma of Teaching, a Bachelor of Education, and a Graduate Diploma of Educational Leadership. She is currently working towards her Diploma of Counselling. Susie’s two sons, Jonathon (2019) and Nicholas (2021), attended Pembroke.
Sean Bates (Director of Information and Communication Technology)
Sean joined Pembroke in May 2022 as Director of ICT. Sean has been responsible for advising, guiding and leading IT strategy, architecture, projects and change management for a variety of organisations across a broad range of sectors including retail, government, energy, finance, manufacturing, construction, health and education.
Sean is an advocate of lifelong learning and holds numerous qualifications including an MBA and Graduate Diploma in Project Management. He is a member of the Australian Institute of Company Directors and currently serves as an non-executive Director for AICSA and Diving SA.
Hannah Bone (Director of Advancement)
Hannah commenced at Pembroke in 2018 and has responsibility for a broad portfolio including admissions, marketing, communications and fundraising, as well as activities that engage the wider community in the life of the School. Hannah is an experienced advancement professional and her career includes leadership positions and consulting appointments in the performing arts, tertiary and secondary education sectors, across Australia. She is a member of and an advisor to the Pembroke Foundation. Hannah has tertiary qualifications in music and management.
Amanda Bourchier (Director of Community Engagement & Indigenous Education)
Amanda has gained an extensive understanding of Pembroke over more than 30 years. Prior to working at Pembroke, Amanda worked with an international research and marketing company interstate. At Pembroke, Amanda has held the positions of Deputy Head and Acting Head of Girls’ Boarding and she was the inaugural director of the Pembroke School Foundation from 1999 to 2018, helping enable several major capital developments and scholarships. In 2019 Amanda was appointed Director of Indigenous Education and Community Engagement, continuing her work with key supporters of the School, and developing the Indigenous Education program in support of students’ growth as well as engendering a spirit of reconciliation across the School. Amanda is a Fellow of, and an advisor to, the Pembroke Foundation, and a member of the Indigenous Education Advisory Committee at St Mark’s College, Adelaide.
Tracy Hillier (Human Resources Manager - Professional Services Staff)
Tracy commenced at Pembroke in 2020 and is responsible for the human resources management of 200 professional services staff (including casual staff and sporting coaches), along with supporting the professional development of staff and managing Pembroke’s recruitment and onboarding of new staff. Tracy has a Bachelor of Arts (Hons) and a Master of Human Resource Management, along with several years’ previous experience in human resource management. She is also a Certified Member of the Australian Human Resources Institute. Tracy is an old scholar of Pembroke, having graduated in 2002.
Darren Miller (Dean of Administration)
Darren joined Pembroke in 2001 having taught previously in the Catholic sector. Employed as a Chemistry/Science teacher he has since held a range of acting and substantive roles including Senior Tutor, Head of IB and Assistant Head of Senior School prior to commencing as Dean of Administration in 2016. Darren has qualifications in chemistry and education.
Clark Roberts-Thomson (Dean of Studies)
Clark re-commenced at Pembroke in 2020 following previous stints from 2006-09 and 2012-15. Clark oversees the planning and management of Pembroke’s academic program. He has experience in international education in Singapore, the Lutheran sector in addition to the independent education sector. He has held a wide variety of positions including Year 11/12 Coordinator, IB Diploma Coordinator and Assistant Head of Senior School prior to this role as Dean of Studies. Clark has tertiary qualifications in Finance, Economics and Education.
Evan Shillabeer (Head of Boarding)
Evan has been working as a teacher at Pembroke since 1999, and as Head of Boys Boarding since 2006, before commencing as Head of Boarding in 2022. Previously at Pembroke, he has been the Head of Hill House, and the Acting Head of Year 7. As Head of Boarding, he has responsibility for over 60 boarders each year.
Prior to working at Pembroke, Evan taught at St Joseph’s College in Hunter’s Hill, Sydney, and at Canberra Grammar School. In addition, he has spent three years working with young offenders in the UK. Evan holds a Bachelor of Physical Education (Secondary), and currently teaches Health and Physical Education at Pembroke. He is a member of the Australian Boarding Schools Association.