| Wed7 Jun2023 |
|  | 16:30 | Tennis U15A | v Dame Alice Owens School | H |
| |
| Thu8 Jun2023 |
| | 16:30 | Tennis U13A, U13B | v Aldwickbury School | H |
| |
| Fri9 Jun2023 |
| | 16:30 | Tennis U12A, U12B | v St Columba's College | H |
| |
| Sat10 Jun2023 |
|  | | Athletics | County Championships | Hemel |
|  | 11:00 | Cricket 1st XI | v Merchant Taylors' School, Northwood | H |
| | 13:30 | Cricket 2nd XI, U15A, U15B, U15C, U14D, U12A, U12B | v Merchant Taylors' School, Northwood | A |
| | 14:00 | Cricket 3rd XI, U14A, U14B, U14C, U13A, U13B | v Merchant Taylors' School, Northwood | H |
| |
| Mon12 Jun2023 |
| | 16:45 | Cricket U12A | v Aldwickbury School | H |
| |
| Tue13 Jun2023 |
| | 14:30 | Cricket U14A | v Haileybury | tbc |
| |
| Wed14 Jun2023 |
| | | Athletics | County League U16 U14 | Stevenage |
| |
| Thu15 Jun2023 |
| | 09:30 | Athletics | District Championships U16 U15 U14 U13 | Watford |
| |
| Fri16 Jun2023 |
| | 16:30 | Tennis U14A | v St John Lawes | H |
| | 16:30 | Tennis U13A | v Sir John Lawes School | H |
| |
| Sat17 Jun2023 |
| | 10:00 | Tennis U13A, U13B, U12A, U12B | v Highgate School | H |
| | 11:00 | Cricket 2nd XI, U12A, U12B | v Bancroft's School | A |
| | 11:00 | Cricket 1st XI, U15A, U15B, U14A, U14B, U13A, U13B | v Bancroft's School | H |
| |
| Mon19 Jun2023 |
| | 16:30 | Tennis U15A, U13B | v Sir John Lawes School | H |
| |
| Tue20 Jun2023 |
| | 14:15 | Cricket U14A, U14B, U14C | v House Cricket | H |
| |
| Wed21 Jun2023 |
| | | Athletics | Girls Athletics Friendly | Westminster Lodge |
| |
| Thu22 Jun2023 |
| | 16:30 | Tennis U15A, U13A, U13B | v Berkhamsted School | A |
| |
| Fri23 Jun2023 |
| | 14:15 | Cricket U12A | v House Cricket | H |
| |
| Sat24 Jun2023 |
| | 10:00 | Cricket 1st XI, U15A, U15B, U15C, U14C | v Forest School | A |
| | 10:00 | Cricket 2nd XI, 3rd XI, U14A, U14B, U13A, U13B, U12A, U12B | v Forest School | H |
| | 10:00 | Tennis U15A, U15B | v Merchant Taylors' School, Northwood | H |
| |
| Fri30 Jun2023 |
| | 11:30 | Cricket 1st XI | v Marylebone Cricket Club (MCC) | H |
| |
| Sat1 Jul2023 |
| | 09:00 | Tennis 1st Team, U15A, U13A | v Eton Tournament | A |
| |
| Sun2 Jul2023 |
| | 09:00 | Tennis 1st Team, U15A, U13A | v Eton Tournament | A |
| |
| Mon3 Jul2023 |
| | 09:00 | Tennis 1st Team, U15A, U13A | v Eton Tournament | A |
| |
| Tue4 Jul2023 |
| | | Athletics | County League Final U16 U14 | Hemel |
| | 09:00 | Tennis 1st Team, U15A, U13A | v Eton Tournament | tbc |
|  | 09:15 | Swimming | v Inter House 1st & 2nd Form | H |
