
Our Founder
Paul Choi
Founder, School Principal, OCT
Paul is an experienced math teacher in both Canada and Hong Kong. He is also a well-known author of over 60 mathematics text and reference books currently used in Hong Kong. Former students who now send their children to STS may remember having Paul Choi as their senior math teacher at one of our very first STS locations!
STS Supervisory Team
Our supervisory team consists of Eric Choi, Christina Choi, Carrie Wong, Cissy Wu, Jayvis Wan and Julie Diep. Not only is this team always working hard to make sure your inquiries are answered and expectations exceeded, but they can also be found teaching at the campuses. They love teaching, and genuinely enjoy preparing your children for the future. Does your child have an educational goal they want to achieve? Feel free to consult with any one of these team members to see what they can do to help!

Eric Choi
Education Director, OCT, M.Ed.
Eric is an experienced high school math teacher and has taught at STS for over 20 years. He challenges students to test their limits and push themselves to the next level. The key to Eric’s teaching method is to focus on core foundations and identify weaknesses before tackling more complicated problems. When he is not at STS, you can find Eric taking part in daddy duties, exploring nature, or enjoying local festivities.

Christina Choi
Chief Coordinator, M.A. HRM
Christina joined STS in 1997 and is our management team’s fount of knowledge. With her educational background in human resources and her love for education, Christina is able to bring individuals together and make things happen. If you do not catch Christina at STS, she is probably involved with one of the following: working from home, spending quality time with family, gardening, or exploring a variety of art and cultural events.

Cissy Wu
Campus Supervisor, M.Com, BBA
Prior to joining STS, Cissy had traveled and worked in many countries including Australia, New Zealand, and Canada. She is very meticulous and productive with many years of customer service and leadership experiences. Her education and training, together with her professional background, have all served to help make her an effective campus supervisor who listens and understands a client or employee’s concerns thoroughly. She never hesitates to acknowledge the good work of our students and staff and also provide constructive feedback. Cissy believes that there is always a solution and there is always a better way!

Wing Chui
Supervisor Assistant, B.A., HND
Wing brings over a decade of leadership and client-service experience from a global logistics company to STS. With her background in hospitality and tourism management, and strengths in coordination, problem-solving, and relationship building, Wing helps ensure students, parents, and teachers stay connected and supported. She works closely with the management and front desk teams to keep communication and updates timely, clear, and well organized. Outside of work, Wing enjoys spending time with family, exploring local food spots, and playing board games.

Tommy Mak
Campus Leader, B.A.
Tommy has many years of experience in school environments, along with extensive customer service experience. Having spent years in education settings, he understands students’ academic journeys and parents’ concerns. He believes that every student has unique potential. He is happy to provide thoughtful guidance in selecting suitable study levels and courses to meet each student’s needs and goals.
STS Teaching Team
Our STS teaching team comes from a diverse cultural and educational background. We only recruit the cream of the crop who fall into one of the following categories: pre-service teachers, Ontario College of Teachers, and/or teachers who hold or are pursuing a degree in a related field. Our teachers spend countless hours preparing lessons, and marking homework to provide timely feedback for your children so that they are aware of their strengths and weaknesses.
STS Administrative Team
Our front of the line members are the first ones whom you will meet once you enter our campuses. They are the ones to answer all your phone calls and requests via in person or phone. But wait – that’s not all. They are also responsible for supporting our teaching staff by preparing teaching material, and taking attendance in a timely manner to ensure the safety of your children. They are the true masters at multi-tasking! Â



