| Inns | HS |
| 289 | 45 | Repton Pilgrims v Old Brightonians | Repton School Ground, Repton | 2023 |
| 258-8 | 47* | Harrow Wanderers v Sherborne Pilgrims | Harrow School Cricket Ground, Harrow-on-the-Hill | 2002 |
| 254-8 | 49* | Old Cheltonians v Eton Ramblers | College Ground, Cheltenham | 2013 |
| 248-7 | unknown | Rugby Meteors v Old Amplefordians | Ampleforth College, Ampleforth | 1984 |
| 246-8 | 46 | Old Wellingtonians v Eton Ramblers | Upper Club, Eton College | 2009 |
| 244-7 | 49 | Oundle Rovers v Rugby Meteors | Rugby School Ground, Rugby | 2022 |
| 242-9 | 48 | Shrewsbury Saracens v Rugby Meteors | Shrewsbury School, Shrewsbury | 1990 |
| 242-9 | 48 | Old Cliftonians v Old Wellingtonians | Clifton College Close Ground, Clifton | 2007 |
| 241-7 | 47* | Charterhouse Friars v Old Bedfordians | Charterhouse School, Godalming | 2012 |
| 239-4 | 43 | Harrow Wanderers v Marlborough Blues | Harrow School Cricket Ground, Harrow-on-the-Hill | 1994 |
| 237-8 | 36 | Old Malvernians v Old Wellingtonians | Bank of England Ground, Roehampton | 1995 |
| 236-5 | 48* | Oundle Rovers v Old Malvernians | Malvern College Ground, Malvern | 2015 |
| 235-7 | 47* | Oundle Rovers v Radley Rangers | Oundle School Ground, Oundle | 1988 |
| 235-9 | 43 | Old Wykehamists v Stowe Templars | Ridding Field, Winchester | 2014 |
| 234-7 | 49 | Shrewsbury Saracens v Old Wykehamists | Ridding Field, Winchester | 1980 |
| 234-9 | 47* | Lancing Rovers v Old Cheltonians | Lancing College Ground, Lancing | 2000 |
| 231 | 41 | Eton Ramblers v Bradfield Waifs | Bradfield College, Reading | 1998 |
| 230-6 | 43 | Radley Rangers v Shrewsbury Saracens | Radley College Bigside Ground, Abingdon | 1998 |
| 229-9 | 43 | Harrow Wanderers v Old Malvernians | Malvern College Ground, Malvern | 1982 |
| 229-7 | 44 | Old Whitgiftians v Old Cholmeleians | Whitgift School, Croydon | 2008 |
| 227 | 42 | Marlborough Blues v Downside Wanderers | Marlborough College Ground, Marlborough | 1986 |
| 226 | 41 | Bradfield Waifs v Uppingham Rovers | Bank of England Ground, Roehampton | 1996 |
| 226-9 | 45 | Sherborne Pilgrims v Radley Rangers | Radley College Bigside Ground, Abingdon | 1999 |
| 225-9 | 49 | Oundle Rovers v Eton Ramblers | Upper Club, Eton College | 2003 |
| 225 | 41 | Old Cranleighans v Old Bedfordians | Bedford School Ground, Bedford | 2018 |
| 224-6 | 48 | Old Malvernians v Radley Rangers | Radley College Bigside Ground, Abingdon | 1995 |
| 223-7 | 41 | Charterhouse Friars v Marlborough Blues | Charterhouse School, Godalming | 2015 |
| 222-8 | 44 | Old Tonbridgians v Old Blundellians | Blundell's School, Tiverton | 1975 |
| 222-8 | 47 | Old Tonbridgians v Charterhouse Friars | Charterhouse School, Godalming | 1976 |
| 221-8 | 43 | Haileybury Hermits v St Edward's Martyrs | Haileybury College Ground, Hertford | 1993 |
| 221-9 | 46 | Lancing Rovers v Uppingham Rovers | Lancing College Ground, Lancing | 1996 |
| 221 | 47 | Old Wellingtonians v Old Brightonians | Wellington College, Crowthorne | 1998 |
| 221-7 | 46 | Rugby Meteors v Radley Rangers | Rugby School Ground, Rugby | 1998 |
| 220-9 | 44 | Eton Ramblers v Oundle Rovers | Upper Club, Eton College | 2003 |
| 220 | 43 | Bradfield Waifs v Old Millfieldians | Arundel Castle Cricket Club Ground, Arundel | 2022 |
| 219-9 | 48 | Old Whitgiftians v Old Cholmeleians | Whitgift School, Croydon | 1979 |
| 219 | 46 | Old Wellingtonians v Bradfield Waifs | Bradfield College, Reading | 2017 |
| 218-8 | 39 | Old Brightonians v Old Cliftonians | Clifton College Close Ground, Clifton | 1975 |
| 217 | 48 | Old Tonbridgians v Rugby Meteors | Burton's Court, Chelsea | 1973 |
| 217-8 | 47 | St Edward's Martyrs v Felsted Robins | St Edward's School Ground, Oxford | 2015 |
| 216-7 | 46 | Repton Pilgrims v Sherborne Pilgrims | Repton School Ground, Repton | 1968 |
| 216 | 44 | Old Amplefordians v Rugby Meteors | Ampleforth College, Ampleforth | 1984 |
| 215 | 47 | Charterhouse Friars v Downside Wanderers | Downside School, Stratton-on-the-Fosse | 1995 |
| 215-8 | 49 | Haileybury Hermits v Stowe Templars | Haileybury College Ground, Hertford | 1999 |
| 214 | 44 | Old Wellingtonians v Old Cliftonians | Clifton College Close Ground, Clifton | 1975 |
| 214 | 46 | Bradfield Waifs v Old Tonbridgians | Tonbridge School Ground, Tonbridge | 2004 |
| 213-9 | 46 | Oundle Rovers v Old Malvernians | Malvern College Ground, Malvern | 1969 |
| 213-8 | 47 | Old Westminsters v Bradfield Waifs | Bradfield College, Reading | 1976 |
| 213-8 | 44 | Felsted Robins v St Edward's Martyrs | St Edward's School Ground, Oxford | 2015 |
| 212-8 | 46 | Old Cliftonians v Bradfield Waifs | Bradfield College, Reading | 1990 |
| 212 | 41 | Old Bedfordians v Stowe Templars | Stowe School Ground, Stowe | 2014 |
| 212 | 44 | Haileybury Hermits v Old Wellingtonians | Haileybury College Ground, Hertford | 2022 |
| 211-6 | 48 | Old Alleynians v Rugby Meteors | Dulwich College Ground, Dulwich | 2001 |
| 211-9 | 31 | Old Cliftonians v Stowe Templars | Clifton College Close Ground, Clifton | 2022 |
| 210 | 48 | Stowe Templars v Uppingham Rovers | Stowe School Ground, Stowe | 1969 |
| 210-7 | 44 | Oundle Rovers v Old Malvernians | Oundle School Ground, Oundle | 1989 |
| 210 | 49 | Old Brightonians v Repton Pilgrims | Repton School Ground, Repton | 2006 |
| 208-9 | 43 | Stowe Templars v Old Wykehamists | Stowe School Ground, Stowe | 1994 |
| 208 | 36 | Uppingham Rovers v Old Cheltonians | College Ground, Cheltenham | 2011 |
| 207-8 | 47 | Old Cliftonians v Lancing Rovers | Clifton College Close Ground, Clifton | 1993 |
| 207-8 | 47 | Old Wykehamists v Stowe Templars | Stowe School Ground, Stowe | 1994 |
| 207 | 44 | Stowe Templars v Old Wykehamists | Stowe School Ground, Stowe | 1997 |
| 207-8 | 48 | Charterhouse Friars v Old Cranleighans | Jubilee, Cranleigh School | 2014 |
| 207 | 48 | Radley Rangers v Oundle Rovers | Oundle School Ground, Oundle | 2023 |
| 207-9 | 40 | Eton Ramblers v Shrewsbury Saracens | Upper Club, Eton College | 2023 |
| 206-6 | 46* | Old Alleynians v Oundle Rovers | Dulwich College Ground, Dulwich | 1976 |
| 206-7 | 44* | Old Malvernians v Repton Pilgrims | Malvern College Ground, Malvern | 1978 |
| 206-9 | 44 | Marlborough Blues v Old Westminsters | Vincent Square, Westminster | 1991 |
| 206 | 46 | Old Tonbridgians v Old Amplefordians | Ampleforth College, Ampleforth | 2000 |
| 205-7 | 40 | St Edward's Martyrs v Old Whitgiftians | Whitgift School, Croydon | 1974 |
| 205-9 | 43 | Oundle Rovers v Shrewsbury Saracens | Shrewsbury School, Shrewsbury | 1986 |
| 205-9 | 45 | Haileybury Hermits v Felsted Robins | Haileybury College Ground, Hertford | 1996 |
| 205 | 42 | Old Cheltonians v Old Wellingtonians | Wellington College, Crowthorne | 2008 |
| 204 | 48 | Old Tonbridgians v Old Malvernians | Tonbridge School Ground, Tonbridge | 1979 |
| 204-9 | 46 | Marlborough Blues v Old Wellingtonians | Burton's Court, Chelsea | 1980 |
| 204-9 | 40 | Repton Pilgrims v Old Merchant Taylors | Durrants Sports Ground, Croxley Green | 1983 |
| 204-7 | 45 | Bradfield Waifs v Old Cliftonians | Bradfield College, Reading | 1990 |
| 204 | 44 | Radley Rangers v Old Tonbridgians | Radley College Bigside Ground, Abingdon | 2006 |
| 204 | 48 | St Edward's Martyrs v Old Cliftonians | St Edward's School Ground, Oxford | 2016 |
| 204 | 48 | Bradfield Waifs v Shrewsbury Saracens | Bradfield College, Reading | 2021 |
| 203 | 46* | Old Tonbridgians v Old Alleynians | Tonbridge School Ground, Tonbridge | 1971 |
| 203-9 | 43 | Old Merchant Taylors v Repton Pilgrims | Durrants Sports Ground, Croxley Green | 1983 |
| 203 | 43 | Old Brightonians v Radley Rangers | Brighton College Ground, Brighton | 2002 |
| 203 | 39 | Eton Ramblers v Old Malvernians | Malvern College Ground, Malvern | 2008 |
| 203-9 | 44 | Old Wellingtonians v Old Cheltonians | Wellington College, Crowthorne | 2008 |
| 203-8 | 39 | Shrewsbury Saracens v Old Alleynians | Dulwich College Trevor Bailey Sports Ground, Dulwich Common | 2016 |
| 202 | 36 | Radley Rangers v Bradfield Waifs | Bradfield College, Reading | 1994 |
| 201-7 | 37 | Old Amplefordians v St Edward's Martyrs | Ampleforth College, Ampleforth | 1970 |
| 201 | 40 | Charterhouse Friars v Old Malvernians | Malvern College Ground, Malvern | 1985 |
| 201 | 48 | Old Tonbridgians v Stowe Templars | Stowe School Ground, Stowe | 1992 |
| 201 | 29 | Sherborne Pilgrims v Marlborough Blues | Marlborough College Ground, Marlborough | 1992 |
| 201-5 | 49 | Lancing Rovers v Old Amplefordians | Lancing College Ground, Lancing | 1996 |
| 201-8 | 43 | Eton Ramblers v Old Wellingtonians | Wellington College, Crowthorne | 2000 |
| 201 | 44 | Radley Rangers v Felsted Robins | Radley College Bigside Ground, Abingdon | 2003 |
| 201-6 | 40 | Old Tonbridgians v Old Malvernians | Sir Paul Getty's Ground, Wormsley | 2004 |
| 200-9 | 36* | Bradfield Waifs v Lancing Rovers | Bradfield College, Reading | 1975 |
| 200 | 48 | Old Cliftonians v Old Merchant Taylors | Durrants Sports Ground, Croxley Green | 1976 |
| 200-8 | 37 | Downside Wanderers v Old Malvernians | Malvern College Ground, Malvern | 1984 |
| 200 | 36 | Shrewsbury Saracens v Harrow Wanderers | Shrewsbury School, Shrewsbury | 1996 |
| 200-8 | 49 | Bradfield Waifs v Eton Ramblers | Bradfield College, Reading | 2005 |
