Tiffany is the Assistant Principal and one of our HSC Chemistry teachers. She brings extensive teaching and leadership experience, having served as Chemistry Coordinator at North Sydney Boys, where she designed engaging programs and implemented personalised strategies that elevated student achievement in top performance bands. As Head of Student Wellbeing, Tiffany drives our commitment to student wellbeing, personal growth, the fostering of positive relationships and strong sense of community. Together with our teachers, she mentors students to take ownership of their learning, build a strong work ethic, and maintain a healthy study-life balance – preparing them for both academic and lifelong success.

Lok is a highly experienced Mathematics teacher who specialises in HSC Maths, up to Extension 2. With a focus on building fluency and mastery of fundamental concepts, he enjoys demystifying complex mathematical ideas and connecting them to real-world applications to engage students and deepen their understanding. Lok's experience and distinctions include earning a State Rank in Mathematics Advanced, teaching Mathematics Extension 1 and 2 at Sydney Grammar School, and mentoring Gifted and Talented students. As an active member of the Teacher Expert Network for the 2024 NSW Curriculum Reform, Lok is dedicated to designing learning experiences that cultivate independence and critical thinking. Through a student-centred, problem-based approach, he ensure his students are well-equipped to to excel in their scientific and technical pursuits.

Yomna, a former practising dentist, now draws on her scientific expertise as an experienced HSC Biology teacher with a special interest in genetics. She loves sparking students’ fascination with the complexity and beauty of living things and excels at engaging mathematically minded students who may initially see biology as a “softer” science, broadening their perspective on its depth and rigor. She emphasizes that biology, while less math-intensive, is uniquely challenging precisely because most biological systems defy mathematical explanation, having emergent properties like consciousness that are greater than the sum of their parts. Beyond the HSC, Yomna has successfully prepared students for the Australian Biology Olympiad. She is also currently completing her training as a school counsellor, further expanding her ability to support students both academically and personally.

After training and working as a chemical engineer, Gavin earned a BSc/BE in Chemical & Biomolecular Engineering and a PhD in Pharmaceutical Thermodynamics from The University of Sydney. Drawn to teaching—the most rewarding part of his research career—he moved to the UK to teach A-level Physics and earned a Certificate in Education through the Researchers in Schools program. Now back in Australia, he specialises in HSC Physics and leads our Engineering Design program, blending problem-based and hands-on learning to sharpen students' critical thinking and deepen their intuition. Beyond the classroom, Gavin is a passionate rock climber and qualified guide with over 15 years of experience climbing all around the world. He leads the school’s climbing program, helping students connect with the outdoors, build resilience and teamwork—and even sneak in a bit of physics along the way.

Chris is a senior English teacher with over two decades experience teaching all levels of HSC English. Before joining our school, he served as Head of English, where he developed engaging course plans and assessments, mentored junior teachers, and consistently drove high levels of student achievement and satisfaction. As an experienced HSC marker for English Advanced and Extension, Chris brings valuable insights that help students refine their writing and analytical skills to achieve top-band results. He believes that with reflection and practice, every student can improve their writing and develop a deeper appreciation for literature through dynamic, engaging teaching. A passionate advocate for the literary canon, Chris specialises in Shakespeare, Faulkner and Salinger, challenging students with thought-provoking discussions and philosophical debate. His greatest joy is seeing the moment of dawning understanding on his students' faces and witnessing their growth as critical thinkers and articulate writers.

Andrew earned his BSc (Hons) and PhD (Organic Chemistry) from The University of Sydney before serving as Associate Professor at Macquarie University, where he lectured and led a research group synthesizing and studying new molecules. However, it was the demanding yet rewarding experience of mentoring first-year chemistry students in weekly lab sessions that ignited his passion for teaching, marking a turning point in his career from research to education. Now an experienced HSC Chemistry teacher, Andrew sees the laboratory as essential for grasping and connecting key concepts in chemistry. Watching a deep-yellow precipitate form from two clear solutions is far more impactful than just being told lead iodide is yellow. Catching the scent of pineapple after synthesising ethyl-propanoate is more memorable than just hearing “esters smell sweet”. These moments of hands-on discovery bring the curriculum to life in ways no textbook can, and are transformative for students’ understanding and appreciation of chemistry.