(previous and current participation)
| UK Schools | City | Participation | Logo |
| Queen Anne’s School | Reading | 2015-2019 |  |
| Sutton Valence School | Maidstone | 2016-2019 |  |
| Canford | Wimborne | 2017-2018 | |
| Cranford House | Wallingford | 2018 | |
| Putney High School | London | since 2019 |  |
| German Schools | City | Participation | Logo |
| Schillerschule | Hannover | since 2018 | |
| Ricarda-Huch-Schule | Hannover | since 2018 |  |
| Wilhelm-Raabe-Schule | Hannover | since 2018 |  |
| Integrierte Gesamtschule Linden | Hannover | 2018-2022 | |
| Limesschule | Altenstadt | 2018-2022 |  |
| Marta-Schanzenbach-Gymnasium | Gegenbach | since 2018 |  |
| Friedrich Gymnasium | Freiburg | since 2019 | |
| Weiherhof Realschule | Freiburg | since 2019 |
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