Delegations by Country 2025
| Delegation | SCHOOL |
| Afghanistan | Box Hill School |
| Algeria (SC) | St Joseph’s Gr/Fr School |
| Argentina | Habs Elstree Schools |
| Australia | New School, Georgia |
| Belarus | Cheadle Hulme School |
| Belgium | St Joseph’s Gr/Fr School |
| Bosnia | Not allocated |
| Brazil | Croydon High School |
| Canada | Frankfurt Int’l School |
| Chile | St George’s British School |
| China (SC) | St Andrew’s College |
| Colombia | Not allocated |
| Congo (Dem Rep) | Coloma Convent Girls School |
| Congo (Rep) | St Andrew’s College |
| Costa Rica | Santa Margarita Catholic High |
| Cote d’Ivoire | St Andrew’s College |
| Croatia | St Joseph’s Gr/Fr School |
| Cuba | St Andrew’s College |
| Cyprus | Not allocated |
| Czech Republic | St Andrew’s College |
| Denmark (SC) | Cours St Charles |
| Djibouti | Not allocated |
| Egypt | ETSS Wicklow |
| Eritrea | Blackrock College |
| Finland | St Joseph’s Gr/Fr School |
| France (SC) | Blackrock College |
| Germany | Bishop Thomas Grant |
| Greece (SC) | Catholic University School |
| Guyana (SC) | Royal Russell School |
| Haiti | Not allocated |
| India | Santa Margarita Catholic High |
| Iran | Frankfurt Int’l School |
| Ireland | Not allocated |
| Israel | Bishop Thomas Grant |
| Italy | Royal Russell School |
| Japan | Royal Russell School |
| Kazakhstan | Not allocated |
| Korea (Dem Rep) – North | Box Hill School |
| Korea (Rep) – South (SC) | Gordon’s School |
| Lebanon | Civico Polo Scolastico, Milan |
| Malta | Civico Polo Scolastico, Milan |
| Mexico | St Gerard’s School |
| Myanmar | Not allocated |
| Netherlands | Cheadle Hulme School |
| New Zealand | St George’s British School |
| Norway | Not allocated |
| Pakistan (SC) | Croydon High School |
| Panama (SC) | Habs Elstree Schools |
| Philippines | St George’s British School |
| Poland | Cours St Charles |
| Portugal | Rathdown School |
| Qatar | Maida Vale School |
| Russian Fed (SC) | Frankfurt Int’l School |
| Sao Tome and Principe | Pipers Corner |
| Saudi Arabia | Terenure College |
| Senegal | Not allocated |
| Sierra Leone (SC) | Wesley College |
| Slovakia | Maida Vale School |
| Slovenia (SC) | Terenure College |
| Somalia (SC) | Cheadle Hulme School |
| South Africa | Hitachi First High School |
| South Africa | Hitachi First High School |
| South Sudan | St George’s British School |
| Spain | Cours St Charles |
| Sudan | Rathdown School |
| Sweden | Croydon High School |
| Switzerland | Not allocated |
| Syria | George Cosbuc College |
| Tanzania | Rathdown School |
| Trinidad & Tobago | Gonzaga College SJ |
| Türkiye | Coloma Convent Girls School |
| UAE | New School, Georgia |
| UK (SC) | Belvedere College SJ |
| Ukraine | St George’s British School |
| USA (SC) | Ampleforth College |
| Uzbekistan | Croydon High School |
| Venezuela | Frankfurt Int’l School |
| Viet Nam | Hitachi First High School |
| Viet Nam | Hitachi First High School |
| Yemen | Gordon’s School |
| Zimbabwe | Habs Elstree Schools |
