| Inns | HS |
| 397-9d | 83* | Scotland Under-17s (1) v Lincolnshire Under-17s | Ashby Avenue, Hartsholme | 2014 |
| 355 | 70 | Scotland Under-17s (1) v Cambridgeshire Under-17s | Park Road, Addington | 2008 |
| 346 | 79 | Scotland Under-19s v England Under-17s | North Marine Road, Scarborough | 1996 |
| 341 | 70 | Scotland Under-17s (1) v Norfolk Under-17s | Walcis Park, Great Witchingham | 2008 |
| 340-6d | 99* | Scotland Under-19s v England Under-17s | North Marine Road, Scarborough | 1998 |
| 327-5d | 95 | Scotland Under-17s (1) v Suffolk Under-17s | Friars Street, Sudbury | 2013 |
| 322-9d | 69 | Scotland Under-17s (1) v Cumbria Under-17s | The Playground, Whitehaven | 2014 |
| 318 | 99 | Scotland Under-17s (1) v Norfolk Under-17s | The Langley, Garboldisham | 2011 |
| 313 | 80 | Scotland Under-15s v Guernsey Under-15s | Rugby School Ground, Rugby | 2013 |
| 313-9 | 95 | Scotland Under-17s (1) v Northumberland Under-17s | The Wicket, Hipsburn | 2014 |
| 307-7 | 83* | Scotland Under-13s v Denmark Under-13s | Park Avenue, Dublin | 2005 |
| 304-9d | 91 | Scotland Under-17s (1) v Leicestershire and Rutland Under-17s | Leicester Road, Hinckley | 2014 |
| 303-8 | 70* | Scotland Under-17s (2) v English Schools Cricket Association Under-15s | Bradfield College, Reading | 2003 |
| 300-8d | 62 | Scotland Under-17s (1) v Herefordshire Under-17s | Stowe Lane, Colwall | 2009 |
| 298 | 78 | Scotland Under-17s (1) v Netherlands Under-17s | The Park, Freuchie | 2007 |
| 297-5 | 91 | Scotland Under-19s v New South Wales Schools | Goldenacre, Edinburgh | 2013 |
| 291-8 | 54 | Scotland Under-17s (1) v Suffolk Under-17s | The Victory Ground, Bury St Edmunds | 2008 |
| 291 | 57 | Scotland Under-17s (1) v Cambridgeshire Under-17s | Spicer's Sports Ground, Sawston | 2011 |
| 287-8 | 75* | Scotland Academy v Carlton | Grange Loan, Edinburgh | 2010 |
| 286-6 | 85 | Scotland Under-19s v Grange | Raeburn Place, Edinburgh | 2008 |
| 284 | 84 | Scotland Under-19s v England Under-17s | Clifton Park, York | 1997 |
| 283-5 | 93 | Scotland Under-19s v Denmark Under-19s | Wellington Oval, St George's | 1997 |
| 281-7 | 71 | Scotland Under-17s v Denmark Under-17s | Nykøbing Mors Cricket Stadium, Nykøbing Mors | 2003 |
| 281 | 76 | Scotland Under-17s (1) v English Schools Cricket Association Under-15s | Loughborough | 2004 |
| 281 | 70 | Scotland Academy (1) v Marylebone Cricket Club | New Williamfield, Stirling | 2010 |
| 281 | 75 | Scotland Under-19s v North West XI | Senwes Park, Potchefstroom | 2011/12 |
| 280 | 73 | Scotland Under-17s v Netherlands Under-17s | Goldenacre, Edinburgh | 2011 |
| 279-8 | 92* | Scotland Academy v Northamptonshire Cricket Academy | Birchfield Road East, Northampton | 2011 |
| 278 | 65 | Scotland Under-19s (1) v Netherlands Under-19s | Cooke Collegians Cricket Club, Shaw's Bridge Upper Ground, Belfast | 2006 |
| 277-6 | 68 | Scotland Under-19s v Denmark Under-19s | Oundle School Ground, Oundle | 2004 |
| 276 | 54 | Scotland Under-19s (1) v Welsh Schools | Pen-y-Pound, Abergavenny | 1993 |
| 272-8 | 63 | Scotland Under-19s v North West University | North West University No 3 Ground, Potchefstroom | 2011/12 |
| 271-9 | 70 | Scotland Under-17s (1) v Cumbria Under-17s | Sedbergh School, Sedbergh | 2013 |
| 270-7 | 70 | Scotland Under-19s v Scottish Universities | Peffermill Playing Fields, Edinburgh | 2009 |
| 270-8 | 59* | Scotland Academy v Yorkshire Academy | Weetwood Playing Fields, Leeds | 2011 |
| 269-9 | 97 | Scotland Under-19s v South Africa Under-19s | JB Marks Cricket Oval, Potchefstroom | 2023/24 |
| 268-7 | 66 | Scotland Under-17s (1) v Herefordshire Under-17s | The Parks, Brockhampton | 2010 |
| 267-8 | 84 | Scotland Under-19s v Gibraltar Under-19s | Sportpark Het Schootsveld, Deventer | 2003 |
| 265-9 | 59 | Scotland Under-19s v Watsonians | Myreside, Edinburgh | 2009 |
| 265 | 47 | Scotland Under-19s (1) v United Arab Emirates Under-19s | Longhirst Hall Ground, Longhirst | 2009 |
| 262 | 54 | Scotland Under-19s v England Under-17s | North Marine Road, Scarborough | 1996 |
| 262-6 | 95* | Scotland Under-19s v North West Academy | Senwes Park, Potchefstroom | 2011/12 |
| 261-8 | 65 | Scotland Development XI v England Player Development Under-17s | Haslegrave Ground, Loughborough | 2010 |
| 261-9 | 54 | Scotland Under-17s (1) v Suffolk Under-17s | Old London Road, Copdock | 2011 |
| 259 | 69 | Scotland Under-19s v Heriot's | Goldenacre, Edinburgh | 2009 |
| 258-6 | 77 | Scotland Under-19s v Jersey Under-19s | Sportpark Westvliet, Voorburg | 2013 |
| 256 | 92 | Scotland Under-19s v Scottish Universities | Raeburn Place, Edinburgh | 1997 |
| 255 | 68 | Scotland Under-19s v Denmark Under-19s | Civil Service Cricket Club, Stormont, Belfast | 2007 |
| 254-7 | 81* | Scotland Under-19s v Marylebone Cricket Club | Lochlands Park, Arbroath | 2013 |
| 252-7 | 55* | Scotland Under-19s v Ireland Under-19s | Bloomfield Cricket and Athletic Club Ground, Colombo | 2005/06 |
| 251-6 | 76* | Scotland Under-19s v Namibia Under-19s | Willowmoore Park Main Oval, Benoni | 2023/24 |
| 250-8 | 56 | Scotland Under-15s v Denmark Under-15s | Sportpark Maarschalkerweerd, Utrecht | 2010 |
| 250-6 | 49* | Scotland Under-19s v Maharana Pratap Police | Abhimanyu Cricket Academy Ground, Dehra Dun | 2010/11 |
