| Star International School, Mirdif150766 | Not applicable | — | — | — |
| Star International School, Al Twar150567 | Not applicable | — | — | — |
| St Stephen's International146833 | Not applicable | — | — | — |
| St Saviour's Ikoyi146834 | Not applicable | — | — | — |
| St Paul's School132577 | Not applicable | — | — | — |
| St Michael's Preparatory School145567 | Not applicable | — | — | — |
| St Lawrence College144736 | Not applicable | — | — | — |
| St George's International School Luxembourg132306 | Not applicable | — | — | — |
| St George's British International School151632 | Not applicable | — | — | — |
| St Constantine's International School150977 | Not applicable | — | — | — |
| St Christopher's Senior and Primary School132559 | Not applicable | — | — | — |
| St Christopher's International School149170 | Not applicable | — | — | — |
| St Catherines British School141510 | Not applicable | — | — | — |
| St Andrews Samakee International School142337 | Not applicable | — | — | — |
| St Andrew's Senior School, Turi149885 | Not applicable | — | — | — |
| St Andrew's Preparatory School, Turi147050 | Not applicable | — | — | — |
| St Andrew's International School, Bangkok132759 | Not applicable | — | — | — |
| South View School151145 | Not applicable | — | — | — |
| Sousse International Secondary School150104 | Not applicable | — | — | — |
| Sousse International Academy149769 | Not applicable | — | — | — |
| Sophia High School149905 | All-through | — | — | — |
| Sherborne School, Qatar (Mall of Qatar)141439 | Not applicable | — | — | — |
| Sherborne Qatar Prep School, Bani Hajer152553 | Not applicable | — | — | — |
| Sharjah English School132597 | Not applicable | — | — | — |
| Seoul Foreign British School149811 | Not applicable | — | — | — |
| School of Research Science137593 | Not applicable | — | — | — |
| Scholars International Academy143029 | Not applicable | — | — | — |
| Sara Village School150545 | Not applicable | — | — | — |
| Safa Community School149793 | Not applicable | — | — | — |
| Safa British School149765 | Not applicable | — | — | — |
| Runnymede College151906 | Not applicable | — | — | — |
| Rugby School Thailand149832 | Not applicable | — | — | — |
| Royal Grammar School Guildford in Qatar147586 | Not applicable | — | — | — |
| Royal Grammar School Guildford Dubai151903 | Not applicable | — | — | — |
| Romanian Gifted School149175 | Not applicable | — | — | — |
| Riverside Virtual College150235 | Secondary | — | — | — |
| Riverside School132364 | Not applicable | — | — | — |
| Richmond Park Independent School151342 | Not applicable | — | — | — |
| Researchers Schoolhouse149174 | Not applicable | — | — | — |
| Repton School Cairo152532 | Not applicable | — | — | — |
| Repton School Al Barsha150982 | Not applicable | — | — | — |
| Repton Abu Dhabi School150271 | Not applicable | — | — | — |
| Reigate Grammar School, Riyadh152206 | Not applicable | — | — | — |
| Regents International School Pattaya146329 | Not applicable | — | — | — |
| Regent Secondary School151864 | Not applicable | — | — | — |
| Regent Primary School, Abuja149809 | Not applicable | — | — | — |
| Regent International School142619 | Not applicable | — | — | — |
| Reach British School149182 | Not applicable | — | — | — |
| Ras Al Khaimah Academy132583 | Not applicable | — | — | — |
| Raffles International School - South Campus142618 | Not applicable | — | — | — |