Sidney Ledson Institute

Sidney Ledson Institute

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It is a great fit for motivated & gifted learners. Our goal is to allow even very young minds to enjoy the fruits of learning.

SLI The Sidney Ledson School is a private school in Toronto offering preschool, kindergarten & elementary grades with small class sizes, early reading, advanced academics & enrichment. Our highly trained teaching specialists lead children along the tested path that, throughout history, has yielded intellectual titans: John Stewart Mill, Jeremy Bentham, Karl Witte, William James Sidis, Norbert Wien

Photos from Sidney Ledson Institute's post 06/23/2026

Yesterday, our students had the opportunity to meet local authors, hear the stories behind their books, ask thoughtful questions, and discover what it takes to bring an idea from imagination to publication. From signed books to inspiring conversations, the visit gave students a firsthand look at the creative process and the many possibilities that begin with a love of reading and writing.

Thank you to our visiting authors for sharing their time, experiences, and passion with our students. πŸ“šβœ¨

StudentInspiration LiteracyEducation FutureAuthors

06/22/2026

SLI The Sidney Ledson School has been ranked #2 in Canada on the Grade 6 School Honour Roll of the Mathematica Centrum Pythagoras Contest, among 368 participating schools nationwide.

Congratulations to our students for their hard work, perseverance, and enthusiasm for mathematics. We are equally grateful to our dedicated teachers and supportive families who help foster a culture where academic excellence can thrive.

06/19/2026

They may be only 6 and 7 years old, but they are already exploring the building blocks of computer programming and computational thinking while developing the strong academic foundations that support lifelong learning.

Photos from Sidney Ledson Institute's post 06/17/2026

The future of policing is changing, and our students had the chance to see it firsthand.

This week, SLI students welcomed members of the Toronto Police Service for an engaging visit that combined community safety, technology, and plenty of curiosity. Students explored a police vehicle, learned about some of the advanced tools and technologies that help officers do their work, and asked thoughtful questions throughout the presentation.

We are grateful to the officers who took the time to share their experiences and help our students learn more about the people and technology working together to keep our communities safe.

Thank you to Ms B for coordinating this visit!

06/12/2026

πŸ‡¨πŸ‡¦βš½ Team Canada spirit is alive at SLI!

Our students are showing their support for Team Canada as they prepare to watch today’s FIFA match together at 3:00 PM. From jerseys and flags to plenty of excitement, it has been wonderful to see students come together to celebrate teamwork, sportsmanship, and national pride.

Go Canada! πŸ‡¨πŸ‡¦βš½πŸ

SLICommunity GoCanada TorontoPrivateSchool StudentLife ProudlyCanadian

Photos from Sidney Ledson Institute's post 06/10/2026

It was wonderful to welcome former students back to SLI for our Alumni Reunion. From chess matches and photo booths to conversations about school, university, careers, and future plans, the evening brought together students past and present in a celebration of connection, friendship, and community.

Seeing alumni reconnect with classmates, teachers, and mentors was a reminder that the relationships formed at SLI continue long after graduation. We enjoyed hearing about their journeys, achievements, and aspirations, and look forward to following their continued successes.

FutureLeaders LifelongConnections SchoolCommunity SLI

06/08/2026

An afternoon of performances, achievements, leadership, and celebration marked the conclusion of another memorable year at SLI The Sidney Ledson School.

From our youngest learners to our graduating students, we were proud to celebrate the growth, character, and accomplishments demonstrated throughout the 2025–2026 school year.

Congratulations to our graduates, award recipients, and all of our students on a wonderful year.

StudentAchievement PrivateSchoolToronto AcademicExcellence SchoolCommunity

Photos from Sidney Ledson Institute's post 06/04/2026

Our students recently visited Arcadia Earth, where technology, science, and environmental education came together in an engaging and thought-provoking experience.

Through a series of immersive exhibits, students explored topics such as biodiversity, ecosystems, pollution, sustainability, and the impact of everyday choices on our planet. The interactive environment encouraged observation, discussion, and critical thinking while bringing important environmental concepts to life.

ExperientialLearning FutureLeaders

Photos from Sidney Ledson Institute's post 05/25/2026

From identifying everyday problems to proposing creative solutions, our young entrepreneurs impressed judges with their imagination and determination during the Entrepreneurship Challenge semifinals.

We are proud of every student who stepped forward to share an idea and develop the confidence to present it to others.

05/11/2026

Celebrating the unique talents that shape our charismatic community is always a cherished SLI tradition! Well done and thank you to all the students - and parents - that brought magic to this year’s talent show! πŸ‘

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Location

Address


220 Duncan Mill Road Suite 107
Toronto, ON
M3B3J5

Opening Hours

Monday 9am - 6pm
Tuesday 9am - 6pm
Wednesday 9am - 6pm
Thursday 9am - 6pm
Friday 9am - 6pm