(previous and current participation)
| UK Schools | City | Participating since | Logo |
| Queen Anne’s School | Reading | 2015 |  |
| Sutton Valence School | Maidstone | 2016 |  |
| Canford | Wimborne | 2017-2018 | |
| Cranford House | Wallingford | 2018 | |
| Putney High School | London | 2019 |  |
| German Schools | City | Participating since | Logo |
| Schillerschule | Hannover | 2018 | |
| Ricarda-Huch-Schule | Hannover | 2018 |  |
| Wilhelm-Raabe-Schule | Hannover | 2018 |  |
| Integrierte Gesamtschule Linden | Hannover | 2018 | |
| Limesschule | Altenstadt | 2018 |  |
| Marta-Schanzenbach-Gymnasium | Gegenbach | 2018 |  |
| Friedrich Gymnasium | Freiburg | 2019 | |
| Weiherhof Realschule | Freiburg | 2019 |
