| School Name | Country | Region |
|---|---|---|
| Rothesay Netherwood School | Canada | Americas |
| Round Square Worldwide Office | United Kingdom | Americas |
| Royal Global School | India | South Asia and the Gulf |
| Ryde School with Upper Chine | United Kingdom | Europe and the Mediterranean |
| SAI International Residential School | South Asia and the Gulf | |
| SAI International School | India | South Asia and the Gulf |
| Saint Andrew’s School | United States | Americas |
| Salésien | Canada | Americas |
| San Silvestre School | Peru | Americas |
| Sarala Birla Academy | India | South Asia and the Gulf |
