Want to enter? Here's how
Become a Teacher Champion
If you don’t already have a Submittable account, please register first before submitting your entries. All entries must be submitted on the TSL Submittable Page (after registering on the same page). The deadline for entries is 1st March 2026 (at midnight UTC)
Study the brief & entry resources
Every year the competition focuses on a different global sustainability challenge. The theme for 2026 is “Creating a Sustainability Culture”. Please read the Competition Brief carefully before entering. You may also find the Entry Resources to be quite helpful.
Fingers crossed
The Finalist and Honourable Mention entry results will be announced on the Winners page of our website on 01 May 2026
Judging criteria
Student Debates
The 2026 Debates will take place in early July 2026 (exact dates are still to be confirmed)
Learn moreKey dates
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07 September 2025
TSL 2026 Competition Launch – HOW TO CREATE A SUSTAINABILITY CULTURE – registration for Teacher Champions/Schools will open on the TSL Submittable page on 7th September
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01 March 2026
The final deadline for entries is midnight UTC – all entries must be submitted on the TSL Submittable page)
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01 May 2026
Announcement of International Competition 2026 Finalists & Honourable Mentions on the TSL website
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22 May 2026
Finalists & Honourable Mention certificates available on TSL Certificates Portal
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22 May 2026
The “Top 10” Finalists in the Primary and Secondary age categories will be notified via their Teacher Champions (using the Teacher Champion email addresses used to register for the Competition on the TSL Submittable page)
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End May 2026
Invitations for eligible students to participate in the International Student Debates will be sent to Teacher Champions, using their officially registered email addresses
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Early July 2026
International Student Debates – Primary & Secondary Schools – online