Table 1.

Descriptive statistics for children included in the analyses

	n	Mean	SD
Age 11 (KS2) points	6,132	28.04	3.85
Age 14 (KS3) points	4,960	35.97	6.19
Age 16 (KS4) points	6,518	39.89	9.48
Age 11–14 (KS2–3) VA score	4,904	0.06	0.42
Age 11–16 (KS2–4) VA score	6,088	−0.03	0.63
Age 14–16 (KS3–4) VA score	4,924	−0.07	0.49
Age 11–14 (KS2–3) CVA score	4,600	0.10	2.52
Age 11–16 (KS2–4) CVA score	6,028	0.98	56.33
Age 14–16 (KS3–4) CVA score	4,914	1.08	45.21

CVA, contextual value‐added; SD, standard deviation; VA, raw value‐added.