Key dates

• 07 September 2025

  TSL 2026 Competition Launch – SUSTAINABILITY CULTURE – registration for Teacher Champions/Schools opens on the TSL Submittable page

• 01 March 2026

  The final deadline for entries is midnight UTC – all entries must be submitted on the TSL Submittable page)

• 01 May 2026

  Announcement of International Competition 2026 Finalists & Honourable Mentions on the TSL website

• 22 May 2026

  Finalists & Honourable Mention certificates available on TSL Certificates Portal

• 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)

• 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

• Early July 2026

  International Student Debates – Primary & Secondary Schools – online