Equal opportunities for all? Analyzing within-country variation in school effectiveness

Large-scale Assessments in Education

An IERI – International Educational Research Institute Journal

Table 1 Overview of countries and student samples

#	School level Country	Complier samples			Analysis samples
							Lower grade			Upper grade
		% Complier	# Students	# Schools	# Students	# Schools	# Students	Grade Label	Mean Age	# Students	Grade Label	Mean Age
		(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)
	Primary school
1	Norway 2015	99	8303	137	8069	124	3987	4	9.72	4082	5	10.72
2	Norway 1995	98	4199	131	3687	99	1868	2	8.84	1819	3	9.85
3	Iceland 1995	98	3306	137	2585	75	1252	3	8.62	1333	4	9.62
4	Cyprus 1995	93	4360	106	4196	99	2048	3	8.81	2148	4	9.82
5	Greece 1995	95	5547	167	5075	138	2527	3	8.58	2548	4	9.56
6	Scotland 1995	95	5268	130	4924	109	2460	4	8.68	2464	5	9.68
	Secondary school
7	Norway 2015	99	9342	142	9279	137	4712	8	13.72	4567	9	14.72
8	Norway 1995	96	1295	38	1116	28	547	6	12.86	569	7	13.84
9	Iceland 1995	99	3063	118	2404	67	1219	7	12.63	1185	8	13.64
10	Sweden 1995	96	5753	115	5375	105	3578	7	13.89	1797	8	14.90
11	Cyprus 1995	93	5398	55	5398	55	2646	7	12.71	2752	8	13.72
12	Scotland 1995	95	5286	122	5245	120	2643	Sec. 1	12.68	2602	Sec. 2	13.68
13	Slovak Rep. 1995	93	6586	145	6586	145	3296	7	13.22	3290	8	14.21

The complier samples contain students who were in the formally correct grade. The analysis samples contain those compliers who were at schools with at least 10 students in the lower and 10 students in the upper grade in the samples. The grade labels indicate what the lower and upper grades were called in the respective countries. The mean age is depicted in years