Table 2. Descriptive statistics for academic attainment.
| Academic attainment |
Healthy weight |
Overweight |
Obese |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Males |
Females |
Males |
Females |
Males |
Females |
|||||||
| n | Mean (s.d.) | n | Mean (s.d.) | n | Mean (s.d.) | n | Mean (s.d.) | n | Mean (s.d.) | n | Mean (s.d.) | |
| 11 y/o (KS 2) | ||||||||||||
| English mark | 1524 | 61.72 (13.77) | 1872 | 66.43 (12.82) | 296 | 60.96 (13.09) | 315 | 64.88 (13.14) | 344 | 58.35 (14.01) | 366 | 62.63 (13.59) |
| Maths mark | 1528 | 73.56 (18.20) | 1861 | 70.57 (17.71) | 295 | 73.75 (18.09) | 315 | 68.10 (18.53) | 345 | 69.36 (18.77) | 365 | 66.79 (18.34) |
| Science mark | 1528 | 63.24 (10.04) | 1861 | 63.24 (9.97) | 298 | 69.36 (18.77) | 315 | 61.69 (10.42) | 347 | 61.47 (9.92) | 369 | 60.85 (10.69) |
| 13 y/o (KS 3) | ||||||||||||
| English mark | 1314 | 48.05 (16.37) | 1600 | 55.42 (14.75) | 252 | 50.27 (15.24) | 282 | 53.30 (14.76) | 297 | 45.05 (15.55) | 323 | 50.02 (15.08) |
| Maths mark | 1320 | 88.75 (21.20) | 1603 | 86.82 (20.60) | 255 | 91.36 (20.00) | 282 | 83.41 (22.26) | 291 | 84.30 (20.24) | 324 | 80.98 (20.32) |
| Science mark | 1324 | 100.71 (21.66) | 1607 | 101.49 (22.68) | 255 | 103.60 (22.34) | 281 | 100.40 (22.17) | 299 | 99.93 (23.99) | 323 | 99.12 (23.95) |
| |
|
Mode (range) |
|
Mode (range) |
|
Mode (range) |
|
Mode (range) |
|
Mode (range) |
|
Mode (range) |
| 16 y/o (KS 4) | ||||||||||||
| GCSE English | 1461 | 6.37 (1.33) (Grade C) | 1788 | 6.87 (1.20) (Grade C) | 285 | 6.39 (1.26) (Grade C) | 313 | 6.70 (1.23) (Grade C) | 328 | 6.09 (1.40) (Grade C) | 355 | 6.44 (1.27) (Grade C) |
| GCSE Maths | 1399 | 6.49 (1.53) (Grade C) | 1766 | 6.54 (1.53) (Grade C) | 278 | 6.66 (1.56) (Grade C) | 309 | 6.31 (1.50) (Grade C) | 318 | 6.10 (1.61) (Grade C) | 352 | 6.14 (1.53) (Grade C) |
| GCSE Science | 843 | 6.40 (1.43) (Grade C) | 1070 | 6.46 (1.41) (Grade C) | 202 | 6.55 (1.40) (Grade C) | 181 | 6.17 (1.41) (Grade C) | 202 | 6.16 (1.39) (Grade C) | 217 | 6.12 (1.32) (Grade C) |
Abbreviations: GCSE, General Certificate of Secondary Education; KS, Key Stage; y/o, years old.
At Key Stages 2 and 3, raw scores are converted to levels (level 1–8, with 8 being the highest). By the end of Key Stage 2, most pupils will have reached level 4, and at the end of Key Stage 3, most pupils will have reached levels 5 and 6.