Mr Steven Davies joined St Mark's in August 2018. Prior to joining St Mark's, Mr Davies was the Dean of Student Wellbeing at All Saints’ College, Bull Creek. Mr Davies completed an Applied Science Degree in Chemistry in 1982. He then combined working as a Chemist (Industrial/Analytical) with overseas travel before completing a Graduate Diploma in Education. His Science teaching career began with the Education Department at Forrestfield SHS, followed by a teacher exchange to Orkney, Scotland, before returning to Armadale SHS. His independent school career commenced at All Saints’ College in 1995 where, as a Science/Chemistry teacher, and as a Head of House, he developed a strong interest in pastoral care of students.

In 2008 Steven was appointed Head of Senior School (Years 10-12) at Tranby College and after six years he returned to All Saints’ College to take up an executive position as Dean of Student Wellbeing. In July 2016 he was appointed for twelve months as Acting Vice Principal, which included a period as Acting Principal, providing valuable leadership experience in high-level operational and strategic matters.

Mr Ivan McLean commenced at St Mark's in January 2022 as Head of Middle School. His prior appointment was as Head of Middle and Senior Schools at the Australian International School Malaysia, from January 2016 to July 2021. Previous to that, Ivan was the Associate Principal Senior School at Peter Moyes Anglican Community School from 2007 to 2015. Ivan is a very experienced educational leader who develops strong relationships with students, their families, and staff, and he is very much looking forward to his new role as Head of Teaching and Learning.

Ms Rosanne Madden joined St Mark's in 2020, from Servite College, where her substantive role was as the Deputy Principal of Teaching and Learning, as well as filling the role of Acting Vice Principal of the College in 2019. Roseanne has brought a wealth of experience to St Mark's, including in curriculum growth and development, leadership and strategic direction. Roseanne and the Senior School team is focused on implementing strategies that support each student to thrive in their learning and personal development, and to create a sense of belonging and connection, which are essential elements in building resilience.

Mr Mark Douglas joined St Mark's in January 2022. Mark was previously the Head of Junior School at Lindisfarne Anglican Grammar School, a co-educational school in northern New South Wales. Prior to his time at Lindisfarne, Mark was Head of Junior School at Ipswich Grammar School, and also spent his first four years of school executive leadership as the Head of Junior School at Great Southern Grammar. Mark's educational philosophy is centred around positive relationships, high expectations and a whole-hearted belief that school should be a successful experience for all students.

Revd Scott Rowland grew up in Sydney, studied at the University of Sydney and the University of New England. He worked in boys' boarding schools while studying and working in Christian ministry in universities. Moving to Perth in 1995, Scott taught geography and economics up to TEE level for a number of years before training for ordained Anglican ministry. He began working at St Mark’s teaching Christian Studies during his ordination training, before being appointed Chaplain in 2007.

Mrs Carolyn Gray was appointed as the School’s Business Manager in August 2016, after joining St Mark’s as the School Accountant in 2014. Growing up in Melbourne, she graduated from Swinburne University, conveniently located across the road from the training ground of her beloved Hawks. As a Chartered Accountant Carolyn has developed a broad range of Australian and international experience in both professional practice and commercial financial management through roles with Ernst & Young, Rio Tinto, Cable & Wireless (UK), Oyster Consulting and more recently her own accounting and taxation practice.