Large-scale Assessments in Education

An IERI – International Educational Research Institute Journal

Table 8 Performance differences in mathematics and science in TIMSS 2011, 2015 and 2019, by schools’ disadvantaged (DEIS) status

From: Trends in educational inequalities in Ireland’s primary schools: an analysis based on TIMSS data (2011–2019)

		Mathematics			Science
		Mean (SE)	Mean difference (SE)	g	Mean (SE)	Mean difference (SE)	g
2011	DEIS	491.47 (5.43)	44.40 (6.13)	0.58	477.46 (5.65)	47.69 (6.47)	0.62
2011	Non-DEIS	535.87 (2.94)	44.40 (6.13)	0.58	525.15 (3.77)	47.69 (6.47)	0.62
2015	DEIS	516.73 (4.71)	37.36 (5.25)	0.52	501.09 (4.96)	33.92 (5.45)	0.49
2015	Non-DEIS	554.09 (2.25)	37.36 (5.25)	0.52	535.01 (2.49)	33.92 (5.45)	0.49
2019	DEIS	519.52 (4.78)	35.59 (5.51)	0.48	500.85 (4.28)	33.35 (5.41)	0.45
2019	Non-DEIS	555.11 (2.81)	35.59 (5.51)	0.48	534.20 (3.70)	33.35 (5.41)	0.45

Differences between mean scores of students in disadvantaged (DEIS) and non-disadvantaged (non-DEIS) schools are statistically significant in each cycle

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