Cohort 21

Cohort 21 is not your typical professional development.

Cohort 21 is a highly personalized, year-long learning experience supported by an active and engaged community of CIS Ontario educators. Since our launch in 2012—when 20 passionate teachers first gathered on a Saturday morning to explore the future of education—our mission has remained unchanged: to build a dynamic space for educators committed to refining, reimagining, and redesigning their practice.

Whether you are a new educator or a seasoned veteran, Cohort 21 attracts those who seek connection, embrace reflection, and are eager to dive into new pedagogies, ideas, and tools.

Lead Facilitators: 
Garth Nichols, Head of School, Kingsway College School
Justin Medved, Associate Head, Academic Innovation, The York School



The Journey at a Glance

Joining Cohort 21 means committing to an eight-month, action-oriented journey of personal and professional growth.

The Structure
The experience unfolds across four in-person sessions, interconnected by rich online collaboration, blogging, and continuous peer dialogue.

The Process
Accelerate your professional growth through a structured process of inquiry, action, and reflection.

Who Should Attend
Individual educators looking to innovate, curriculum leaders, and school teams. Schools are highly encouraged to send multiple participants to help drive and support school-wide initiatives.


One Community. Two Powerful Pathways.

Under the Cohort 21 Community banner, we now offer two distinct pathways to support the evolving needs of educators across our network:

🛠️ Design Lab

For educators seeking to transform practice through action and innovation.

🌱 Leadership Lab

For aspiring leaders ready to explore, define, and grow their leadership identity.


Cohort 21, Season 15 | 2026–2027

Save the Dates! Face-to-Face Sessions

Cohort 21 – Session 1

Saturday, October 3, 2026, 8:00 a.m. to 3:30 p.m. at The York School

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Cohort 21 – Session 2

Saturday, November 28, 2026, 8:00 a.m. to 3:30 p.m. at Havergal College

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Cohort 21 – Session 3

Friday, January 29, 2027, 8:00 a.m. to 3:30 p.m. at Kingsway College School

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Cohort 21 – Session 4

Friday, April 23, 2027, 8:30 a.m. to 3:30 p.m. Location to be Confirmed.

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Registration for Season 15

Registration for for Season 15 will open soon, please ensure we have your email address so you can receive our professional learning messages to the CIS Ontario community. If you are not in our membership yet, please fill out our membership form.

Review the CIS Ontario Event Terms and Conditions. For additional information, please contact Jeremy Barr, Event Manager at jbarr@cisontario.ca.


Imagine finding yourself surrounded by 50 like-minded professionals with only one idea in their head: "How can we help each other become better teachers?".

— Tomas Paz Johnstone, Crestwoood Preparatory College

Watch our Behind-The-Scenes video!


Cohort 21 News

Members, this is the best way to stay up-to-date.

To receive timely information on our professional learning events, student experiences and news relevant to our community of educators, educational staff and administrators, please ensure you are listed as a member in our database. All employees of our member schools are automatically entitled to CIS Ontario membership.

You are in our database as a member if you have a login to our networking and collaboration platform, CISO Connect.

If you do not, please fill out this brief membership form