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We examined the value-added from KS2 to GCSE for 2017 to see which state selective grammar schools added the most value to their charges.

A note of caution - the more highly selective a grammar school, the less scope there will be to add value.

Grammar School Value Added Table
Value added is a measure of how each pupil scores at GCSE compared to the average score at GCSE for pupils with the same grade at Key Stage 2 - the end of primary school. A score of zero indicates an average performance. A value of one indicates that the pupil achieved one grade better than expected in each GCSE (or equivalent exam) that they took. The value added score for a school is the average of their pupils' scores.

For 2017 value added for each pupil is calculated by:

  • Dividing pupils into groups according to their KS2 score
  • Work out the average Attainment 8 score for those pupils (take the GCSE grades (on the new 9 to 1 scale) for maths and English, add them, double that, add the grades of the best three other EBacc subjects and then the best three as-yet-uncounted grades).
  • Subtract this from each pupil's individual Attainment 8 score
  • Divide by 10 to give the Progress 8 measure of value added

Click on a school name to find out more about the school

School name Town Average point score per academic entry Value Added Rank
The Henrietta Barnett School London 50.70 1
Wilson's School Wallington 49.17 2
Queen Elizabeth's School, Barnet Barnet 48.94 3
Reading School Reading 48.67 4
St Olave's Grammar School Orpington 48.29 5
The Tiffin Girls' School Kingston upon Thames 48.06 6
Pate's Grammar School Cheltenham 47.73 7
Colchester Royal Grammar School Colchester 46.65 8
Altrincham Grammar School for Girls Altrincham 46.28 9
The Judd School Tonbridge 46.15 10
The Latymer School London 45.62 11
King Edward VI Camp Hill School for Boys Birmingham 45.56 12
Tiffin School Kingston upon Thames 45.11 13
Colyton Grammar School Colyton 44.93 14
Tonbridge Grammar School Tonbridge 44.67 15
King Edward VI Grammar School, Chelmsford Chelmsford 44.47 16
Beaconsfield High School Beaconsfield 44.42 17
Wallington High School for Girls Wallington 44.36 18
King Edward VI Camp Hill School for Girls Birmingham 44.30 19
Dartford Grammar School Dartford 44.19 20
St Michael's Catholic Grammar School London 43.52 21
Kendrick School Reading 43.48 22
The Blue Coat School Liverpool 43.40 23
Nonsuch High School for Girls Sutton 43.21 24
Westcliff High School for Boys Academy Westcliff-on-Sea 43.21 25
The Rochester Grammar School Rochester 42.84 26
The Skinners' School Tunbridge Wells 42.83 27
Sutton Grammar School Sutton 42.64 28
Ripon Grammar School Ripon 42.61 29
Dr Challoner's Grammar School Amersham 42.33 30
King Edward VI School (Stratford-upon-Avon) Stratford-upon-Avon 42.33 31
Dr Challoner's High School Amersham 42.30 32
Sutton Coldfield Grammar School for Girls Sutton Coldfield 42.21 33
Tunbridge Wells Girls' Grammar School Tunbridge Wells 42.13 34
Colchester County High School for Girls Colchester 41.92 35
The Royal Grammar School, High Wycombe High Wycombe 41.82 36
Sir William Borlase's Grammar School Marlow 41.74 37
Wolverhampton Girls' High School Wolverhampton 41.64 38
Woodford County High School Woodford Green 41.63 39
Wallington County Grammar School Wallington 41.54 40
Wycombe High School High Wycombe 41.16 41
Wirral Grammar School for Girls Wirral 41.12 42
Westcliff High School for Girls Westcliff-on-Sea 41.09 43
Bishop Vesey's Grammar School Sutton Coldfield 41.06 44
Lancaster Girls' Grammar School Lancaster 41.04 45
Bishop Wordsworth's Grammar School Salisbury 40.97 46
Southend High School for Boys Southend-on-Sea 40.92 47
Torquay Girls' Grammar School Torquay 40.77 48
Parkstone Grammar School Poole 40.65 49
Altrincham Grammar School for Boys Altrincham 40.48 50
Aylesbury High School Aylesbury 40.30 51
Aylesbury Grammar School Aylesbury 40.30 52
Langley Grammar School Langley 40.28 53
Sir Thomas Rich's School Gloucester 40.26 54
South Wilts Grammar School for Girls Salisbury 40.26 55
Newport Girls' High School Newport 40.21 56
Royal Latin School Buckingham 40.17 57
Stratford Girls' Grammar School Stratford-upon-Avon 40.12 58
Sir Henry Floyd Grammar School Aylesbury 40.11 59
Ermysted's Grammar School Skipton 40.07 60
Lancaster Royal Grammar School Lancaster 40.06 61
King Edward VI Five Ways School Birmingham 39.77 62
Southend High School for Girls Southend-on-Sea 39.73 63
Newstead Wood School Orpington 39.67 64
Skipton Girls' High School Skipton 39.64 65
Sir Joseph Williamson's Mathematical School Rochester 39.54 66
King Edward VI Handsworth School Birmingham 39.51 67
Chesham Grammar School Chesham 39.48 68
Dartford Grammar School for Girls Dartford 39.24 69
Loreto Grammar School Altrincham 39.11 70
Rugby High School Rugby 39.03 71
Torquay Boys' Grammar School Torquay 38.97 72
Lawrence Sheriff School Rugby 38.95 73
John Hampden Grammar School High Wycombe 38.60 74
Caistor Grammar School Market Rasen 38.53 75
St Ambrose College Altrincham 38.44 76
Chelmsford County High School for Girls Chelmsford 38.38 77
Cranbrook School Cranbrook 38.33 78
Queen Mary's Grammar School Walsall 38.26 79
Weald of Kent Grammar School Tonbridge 38.24 80
The King Edward VI Grammar School, Louth Louth 38.20 81
Invicta Grammar School Maidstone 38.09 82
Stroud High School Stroud 38.01 83
Bournemouth School for Girls Bournemouth 38.00 84
Highworth Grammar School Ashford 37.93 85
Queen Elizabeth's Grammar, Alford Alford 37.17 86
Sale Grammar School Sale 37.14 87
Alcester Grammar School Alcester 37.07 88
Queen Elizabeth's Grammar School, Horncastle Horncastle 36.90 89
Devonport High School for Girls Plymouth 36.84 90
Townley Grammar School Bexleyheath 36.77 91
Devonport High School for Boys Plymouth 36.66 92
Simon Langton Girls' Grammar School Canterbury 36.64 93
Bacup and Rawtenstall Grammar School Rossendale 36.53 94
Adams' Grammar School Newport 36.46 95
Bourne Grammar School Bourne 36.41 96
Dane Court Grammar School Broadstairs 36.39 97
The Crypt School Gloucester 36.34 98
The North Halifax Grammar School Halifax 36.24 99
Kesteven and Grantham Girls' School Grantham 36.22 100
Kesteven and Sleaford High School Sleaford 36.22 101
Burnham Grammar School Slough 36.19 102
West Kirby Grammar School Wirral 36.19 103
Clitheroe Royal Grammar School Clitheroe 36.10 104
King Edward VI Aston School Birmingham 35.83 105
Urmston Grammar Academy Manchester 35.81 106
Queen Elizabeth's Grammar School Faversham 35.71 107
The King's School, Grantham Grantham 35.68 108
Chislehurst and Sidcup Grammar School Sidcup 35.63 109
Bournemouth School Bournemouth 35.61 110
St Bernard's Catholic Grammar School Slough 35.48 111
Upton Hall School FCJ Wirral 35.45 112
The Crossley Heath School Halifax 35.44 113
Marling School Stroud 35.24 114
Sir Roger Manwood's School Sandwich 35.23 115
Bexley Grammar School Welling 35.22 116
Ilford County High School Ilford 35.12 117
Simon Langton Grammar School for Boys Canterbury 34.94 118
Queen Elizabeth Grammar School (Penrith) Penrith 34.84 119
High School for Girls Gloucester 34.78 120
St Joseph's College Stoke-on-Trent 34.67 121
Herschel Grammar School Slough 34.61 122
Poole Grammar School Poole 34.55 123
Spalding High School Spalding 34.55 124
The Harvey Grammar School Folkestone 34.51 125
Spalding Grammar School Spalding 34.49 126
Tunbridge Wells Grammar School for Boys Tunbridge Wells 34.48 127
Highsted Grammar School Sittingbourne 34.44 128
Barton Court Grammar School Canterbury 34.43 129
Rainham Mark Grammar School Gillingham 34.37 130
Maidstone Grammar School for Girls Maidstone 34.04 131
Handsworth Grammar School Birmingham 33.57 132
Beths Grammar School Bexley 33.33 133
Plymouth High School for Girls Plymouth 33.30 134
Carre's Grammar School Sleaford 32.98 135
Wirral Grammar School for Boys Wirral 32.70 136
Calday Grange Grammar School Wirral 32.67 137
Dover Grammar School for Girls Dover 32.18 138
Gravesend Grammar School Gravesend 32.16 139
The Skegness Grammar School Skegness 32.06 140
Ribston Hall High School Gloucester 32.03 141
The Folkestone School for Girls Folkestone 32.02 142
Queen Mary's High School Walsall 31.75 143
Oakwood Park Grammar School Maidstone 31.74 144
Maidstone Grammar School Maidstone 31.65 145
Churston Ferrers Grammar School Brixham 31.57 146
Upton Court Grammar School Slough 31.56 147
Wilmington Grammar School for Girls Dartford 31.42 148
St Anselm's College Prenton 31.25 149
Fort Pitt Grammar School Chatham 30.61 150
Mayfield Grammar School Gravesend 30.59 151
Heckmondwike Grammar School Heckmondwike 30.53 152
The Queen Elizabeth's High School, Gainsborough Gainsborough 30.35 153
Stretford Grammar School Manchester 30.28 154
Holcombe Grammar School Chatham 30.24 155
Chatham & Clarendon Grammar School Ramsgate 29.88 156
Wilmington Grammar School for Boys Dartford 29.83 157
Chatham Grammar School for Girls Chatham 29.56 158
The Norton Knatchbull School Ashford 29.12 159
Dover Grammar School for Boys Dover 27.57 160
Boston High School Boston 27.22 161
Borden Grammar School Sittingbourne 26.42 162
The Boston Grammar School Boston 23.10 163

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