| 2016 | 2017 | 2018 | 2019 | 2020 | Total | |
| Ardingly | 1 | 1 | ||||
| Beechwood Sacred Heart | 2 | 2 | ||||
| Benenden | 1 | 2 | 3 | |||
| Bennett Memorial | 2 | 1 | 1 | 1 | 5 | |
| Bethany School | 1 | 1 | ||||
| British International School, Cairo | 1 | 1 | ||||
| Bromley High School | 1 | 1 | ||||
| Caterham | 1 | 2 | 4 | 1 | 1 | 9 |
| Cheltenham Ladies’ College | 1 | 1 | ||||
| City of London School | 1 | 1 | ||||
| Claremont School | 1 | 1 | ||||
| Cobham Hall | 2 | 2 | 4 | |||
| Colfe’s | 1 | 1 | ||||
| Darien Middlesex Middle School, USA | 1 | 1 | ||||
| Darrick Wood | 1 | 1 | ||||
| Epsom College | 1 | 1 | ||||
| Farringtons | 1 | 1 | ||||
| Haileybury | 1 | 1 | ||||
| Hawthorns School | 1 | 1 | ||||
| Hillview School for Girls | 1 | 1 | 2 | |||
| Homewood School | 1 | 1 | ||||
| International School of Geneva | 1 | 1 | ||||
| The Judd School | 1 | 2 | 1 | 4 | 8 | |
| Kent College, Pembury | 5 | 1 | 2 | 8 | ||
| King’s Ely | 1 | 1 | ||||
| King’s Rochester | 1 | 1 | ||||
| Maidstone Grammar – boys | 1 | 1 | 2 | |||
| Mayfield | 1 | 1 | ||||
| Radnor House | 2 | 6 | 1 | 2 | 2 | 13 |
| Raymond J Fisher Middle School, California | 1 | 1 | ||||
| Sackville School | 1 | 2 | 3 | |||
| Sevenoaks Prep | 1 | 1 | ||||
| Sevenoaks School | 6 | 8 | 8 | 4 | 7 | 33 |
| Skinners’ School | 2 | 2 | ||||
| Sutton Valence | 3 | 2 | 3 | 8 | ||
| Tonbridge Grammar | 1 | 2 | 2 | 1 | 6 | |
| Trinity School, London | 1 | 1 | ||||
| Trinity School, Sevenoaks | 1 | 3 | 1 | 5 | ||
| Tunbridge Wells Grammar – boys | 3 | 1 | 2 | 6 | ||
| Tunbridge Wells Grammar – girls | 1 | 1 | ||||
| Walthamstow Hall | 2 | 3 | 1 | 2 | 8 | |
| Weald of Kent Grammar | 1 | 4 | 1 | 4 | 10 | |
| Wilmington Grammar Boys | 1 | 1 | ||||
| Wilmington Grammar Girls | 1 | 1 | ||||
| Woldingham School | 1 | 1 | ||||
| Wrotham School | 1 | 1 | 2 | |||
| 34 | 42 | 32 | 24 | 33 | 165 |
| 2016 | 2017 | 2018 | 2019 | 2020 | Total | |
| Ardingly | 1 | 1 | 1 | 3 | ||
| Beechwood Sacred Heart | 1 | 1 | ||||
| Benenden | 1 | 1 | ||||
| Bethany School | 1 | 3 | 4 | |||
| British International School, Cairo | 1 | 1 | ||||
| Caterham | 1 | 6 | 2 | 2 | 3 | 14 |
| Christ’s Hospital | 1 | 1 | ||||
| Cranbrook School | 1 | 2 | 3 | |||
| Epsom College | 1 | 1 | ||||
| Hillview School | 2 | 2 | ||||
| Hurstpierpoint | 1 | 1 | 2 | |||
| Kent College, Pembury | 1 | 1 | ||||
| King’s Canterbury | 1 | 1 | ||||
| King’s Rochester | 1 | 1 | 2 | |||
| Millfield | 1 | 1 | ||||
| Radnor House | 1 | 1 | 1 | 3 | ||
| St Aloysius College, Glasgow | 1 | 1 | ||||
| Sackville | 1 | 1 | ||||
| Sevenoaks School | 8 | 8 | 4 | 2 | 5 | 27 |
| Skinners’ Grammar School | 1 | 1 | ||||
| Sutton Valence | 6 | 2 | 8 | |||
| Tonbridge | 1 | 2 | 6 | 1 | 10 | |
| Truro School | 2 | 2 | ||||
| Walthamstow Hall | 3 | 2 | 5 | |||
| Wrotham School | 3 | 3 | ||||
| 24 | 23 | 20 | 14 | 19 | 100 |
