Randi Berman has been a Middle School art teacher since 2000. In September 2014, she assumed the role of Arts Coordinator, and in 2015, she became the coordinator for the Middle School Community Giving program. Before joining SAC, Randi graduated from the Ontario College of Art and worked in an art department for a clothing manufacturer. Randi is involved with the Arts Council in Upper School, runs the Middle School Visual Arts program on Tuesdays, and teaches art classes to Upper School students on Thursday afternoons during ACPlus. Randi organizes the Middle School Arts Day each winter, where local artists spend a day instructing the students on different art mediums and techniques. She lives in Newmarket with her husband and three children.

Trevor Biasi started teaching in the Upper School of St. Andrew's College in 2004. He has a BA (Hons.) from Wilfrid Laurier University, a B.Ed. from Western University, and an M.Ed. from the University of Nipissing. Trevor moved into the role of Director of Middle School in July 2021 after serving as Assistant Director of the Middle School eight years. Trevor has an extensive background in coaching and is Head Coach of Varsity Baseball and U12 Hockey. Trevor lives in Uxbridge with his wife, Paula, and their children, Robin and Reid '27.

Michele Derwin assumed the role of Middle School Athletics Coordinator in September 2017. She joined the SAC faculty in 2005 as a science teacher in the Middle School. She has a bachelor’s in kinesiology from Acadia University and a B.Ed. from Nipissing University. Michele teaches grades 5, 7, and 8 health and physical education as well as grade 7 science.

Colby Dockerty joined the  Middle School in September 2015 to teach grade 6 math, science, language and PhysEd. Prior to this he taught grade 8 for three years at Nobleton Public School. Colby holds a bachelor's degree with honours in philosophy (minor in history) from the University of Guelph, and a master's in the science of education from D'Youville College in Buffalo. A sports enthusiast, Colby coaches U14 Basketball and U14 Volleyball.

Whitney Elliott joined the faculty of St. Andrew’s in 2006 as a French and geography teacher in the Middle School. She holds a BA (Hons.) from the University of Guelph and a B.Ed. from York University. Whitney is a grade 6 Core teacher, instructing in math, French, language arts, and science. Prior to joining SAC, Whitney volunteered at a school in Quebec and studied at a Language School in Trois Pistoles. She is currently the faculty coordinator for the Middle School Green Team and assists in the MS Band as an alto saxophone player. Whitney coaches U14 Volleyball and U14 Track & Field.

Kyle Fraser-Shoemaker joined the faculty of St. Andrew's in 2015. He is a teacher in the Canadian and World Studies Department and is an assistant head of Macdonald House. He coaches 1st Rugby and U16 Football and is a member of the School’s Leadership in Action program. Kyle is a graduate of the Teacher Education program at Brock University with additional qualifications in science, special education, English as a second language, and online teaching and learning.

Deanna Harris joined the faculty at St. Andrew's in September 2018 as a math and French teacher in the Upper School. She received a Bachelor of Science and B. Ed from Brock University and has recently completed her Honours Specialist in Mathematics. Deanna acts as a duty teacher in Macdonald House and coaches both volleyball and softball.

Stephen Holmes joined the St. Andrew's faculty in 2015 teaching mathematics and science in the Middle School and now teaches in the Upper School Science and Modern Languages Departments. He holds a B.Sc. (Hons.) from the University of Guelph, and a B.Ed. from University of Toronto (OISE). Stephen has many accolades as an elite middle distance runner including winning the 2013 Canadian Championship in the 1000-metre race, and brings his expertise to coaching the Middle School U14 and U12 Track & Field programs. In addition, he coaches the U13 Basketball team and has worked to develop the Middle School First Lego League Robotics program.

Adam Kowaltschuk joined the faculty in 2003 and teaches Grade 7 and 8 geography in the Middle School. He holds a B.E.S. from the University of Waterloo, a B.Ed. from Lakehead University, and a Master's of Education from Graceland University. Adam spent three years as Assistant Head of MacDonald House before moving off campus into Newmarket's historic downtown neighbourhood. As with many geographers, Adam has travelled extensively, living and working in New Zealand, Japan, and Ghana. Adam previously served as the Grade 7 and Grade 8 Team Leader. Currently, Adam contributes to the school's MEDIC Committee, focusing on masculinity, equity, and diversity issues in a boy's school culture. Adam lives in Newmarket with his wife, Jessica, and sons, Nathan and Gavin.

Jamie MacPherson ’99 joined the faculty in 2009 and teaches Health and Physical Education and Language Arts in the Middle School. A graduate of St. Andrew’s College from the Class of 1999, Jamie earned a BA (Hons.) from Acadia University and a GDE from the University of Auckland in New Zealand. Before returning to SAC, he taught history at Rothesay Netherwood School in New Brunswick and history and physical education at Emily Carr Secondary School in Vaughan. Jamie coaches the 1st Golf team and U14 Hockey. 

Garry Page is enjoying his fifteenth year with St. Andrew’s College, currently serving as an itinerant music faculty member, Director of Bands, and Director of the St. Andrew’s Academy of Music. He holds honours music degrees in trumpet performance, academics, and teaching from the Birmingham Conservatoire of Music and the Guildhall School of Music and Drama, London, England. Garry immigrated to Canada in 1997, at which point he became a member of the Stratford Festival Orchestra. He has performed as a soloist at top performing arts theatres in Canada and the U.K. and is the founder of award-winning Brass Pages Quintet and trumpet and organ duo Page Two. Garry serves as Director of the New Horizons Bands of Toronto Concert Band for Adult Students. He has numerous Academy and Juno nominated and winning recordings for motion-picture soundtracks, video games, and Naxos classical discs, pop, jazz-fusion, Latin, and blues for Blue Note and Verve. Garry has broadcast for national and local radio stations in the U.K., Europe, Asia, U.S., and Canada with appearances on major television networks, including the BBC and CBC radio. Garry is an award-winning music educator who has had articles on music published by the Royal Conservatory of Music, Conservatory Canada, The Whole-Note, and the Associated Board of the Royal Schools of Music. As well, he has written music critiques for local and national newspapers. He is active as a freelance performer, teacher, adjudicator, clinician, university lecturer, and examiner. He has served as a tutor of brass at Kingsway College School, Etobicoke; Director of the KCS ‘Kool Cats’ Jazz Ensemble; and interim Head of Music for Greenwood College School. Garry has on numerous occasions conducted the Conference of Independent Schools Music Festival All-Star Jazz Band and Wind Ensemble at Roy Thomson Hall. In 2021, he received an Education Community Service Award for 25 years as the Royal Conservatory of Music Centre Representative for Stratford, Ont. 

Keith Ramon began teaching at St. Andrew's College in 2002. He holds a BA (Hons.) from Trent University, a B.Ed. from Queen's University, and an Honours Specialist from the University of Toronto. He is the Director of Boarding Life and has lived in Sifton House and Macdonald House as the lead in each residence. He is the head coach of the triathlon team and coaches cross-country running. He teaches leadership classes and is a Senior Course Officer for the #142 Highland Cadet Corps. Keith's wife, Melissa, is the librarian and also teaches in the Middle School. Both of their sons attend St. Andrew's and are scheduled to graduate in 2027 and 2029.

Melissa Ramon began her teaching career at SAC in 2005 as a history teacher in the Middle School. She is the School's Head Librarian, helping boys in Upper and Middle schools enjoy reading and engage in effective research. She is the chair of SAC's Information Technology Integration (ITi) Committee. She received her BA and B.Ed. from Trent University and an Honours Specialist from the University of Toronto. Melissa is the head coach of the curling team at SAC and trains for Ironman triathlons in her personal time. Melissa and her husband, Keith, the Director of Boarding Life, live in Macdonald House with their sons, Owen '27 and Duncan '29.

Katie Still began as the Grade 6 Core teacher at St. Andrew's College in 2016. She completed a Professional Masters of Education from Queen's University in March 2021 and holds a BA (Hons.) from Queen's, a B.Ed. from Lakehead University, and an honours specialist in teaching English language learners. She has additional qualifications in intermediate math and English. She teaches Grade 7 and 8 language arts, Grade 7 history, and Grade 6 social studies. Katie served as the Academic Support Coordinator in the Middle School, creating student support plans and overseeing academic accommodations. She is a member of the ITi committee and is the Middle School Green Team leader. She coaches U14B Soccer, the Middle School swim team, and previously helped with Track & Field and U14 Rugby.