IEA: Percentage distribution and average achievement scores of fourth-grade students in reading and language instruction as reported in PIRLS, by class size and country: 2006

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Table C.1.03.

IEA: Percentage distribution and average achievement scores of fourth-grade students in reading and language instruction as reported in PIRLS, by class size and country: 2006

— Not available. Country did not participate in the 2001 assessment.
	1-20 students									21-30 students								31 or more students
	2006 percent of students			Average achievement		Difference in percent from 2001				2006 percent of students		Average achievement		Difference in percent from 2001				2006 percent of students			Average achievement		Difference in percent from 2001
Countries	Percent		s.e.	Score	s.e.	Percent		s.e.		Percent	s.e.	Score	s.e.	Percent		s.e.		Percent		s.e.	Score	s.e.	Percent		s.e.
International average	32		0.5	489	1.6	†		†		51	0.5	504	0.9	†		†		17		0.3	486	1.7	†		†

Luxembourg	92		0.1	557	1.2	—		†		6	0.1	554	2.8	—		†		1		#	‡	†	—		†
Romania	57		3.3	474	6.7	23		4.3	∆	41	3.4	508	7.0	-13	!	5.0	▼	‡		†	‡	†	-9	!	3.0	▼
Bulgaria	59		4.0	541	5.5	22		5.1	∆	41	4.0	556	6.7	-21		5.2	▼	#		†	‡	†	‡		†
Slovenia	57		3.4	519	2.5	14	!	5.1	∆	42	3.4	525	3.1	-16	!	5.1	▼	‡		†	‡	†	‡		†
Italy	53		3.8	548	4.0	‡		†		47	3.8	555	3.7	‡		†		#		†	‡	†	#		†

Norway	56		4.4	496	4.1	‡		†		42	4.1	500	3.3	‡		†		‡		†	‡	†	‡		†
Lithuania	40		3.0	526	2.7	‡		†		60	3.0	545	2.0	‡		†		#		†	‡	†	‡		†
Denmark	51		3.9	541	3.4	—		†		49	4.0	553	3.5	—		†		#		†	‡	†	—		†
Latvia	51		3.0	531	3.6	19		4.4	∆	45	3.0	550	2.8	-13	!	4.9	▼	4	!	1.5	564	11.8	-7	!	3.0	▼
Iceland	48		0.4	509	1.9	-2		0.5	▼	49	0.4	511	1.8	‡		†		3		0.1	504	10.6	3		0.1	∆

Belgium (Flemish)	47		3.9	546	2.7	—		†		52	3.9	548	2.6	—		†		#		†	‡	†	—		†
Austria	42		3.5	542	3.2	—		†		58	3.5	536	2.8	—		†		#		†	‡	†	—		†
Belgium (French)	39		3.8	496	5.5	—		†		59	3.7	502	3.3	—		†		‡		†	‡	†	—		†
Georgia	51		3.1	467	4.9	—		†		29	3.3	464	4.1	—		†		20		2.9	489	6.2	—		†
Poland	38		3.6	512	3.9	—		†		60	3.7	524	3.2	—		†		2	!	0.8	‡	†	—		†

Trinidad and Tobago	41		3.1	407	9.8	—		†		53	3.4	456	6.0	—		†		7		2.0	485	14.4	—		†
Germany	33		2.8	541	4.1	‡		†		67	2.8	553	2.5	‡		†		#		†	‡	†	-2	!	0.9	▼
Hungary	38		3.6	529	5.6	12	!	4.8	∆	58	3.8	563	3.5	‡		†		4	!	1.7	568	5.7	‡		†
Russian Federation	35		2.3	542	4.9	‡		†		62	2.5	577	4.0	‡		†		‡		†	‡	†	‡		†
Moldova, Rep. of	35		3.5	495	5.9	13	!	5.3	∆	55	3.8	499	4.2	‡		†		10		2.4	513	8.3	‡		†

Slovak Republic	34		2.9	520	5.4	‡		†		59	3.3	534	3.6	‡		†		7		1.8	553	3.9	‡		†
Spain	32		3.6	498	6.2	—		†		68	3.6	519	2.8	—		†		#		†	‡	†	—		†
United States	26		3.4	535	6.4	‡		†		68	3.7	541	3.9	‡		†		5	!	1.6	540	10.7	‡		†
Sweden	33		3.5	542	3.8	‡		†		61	4.1	553	2.9	‡		†		6	!	2.3	545	8.5	‡		†
Canada, Alberta	24		2.5	558	4.2	—		†		74	2.7	561	3.0	—		†		3	!	1.2	542	22.9	—		†

Canada, Nova Scotia	19		2.3	536	6.1	—		†		79	2.5	544	2.5	—		†		2	!	0.9	‡	†	—		†
France	14		1.9	505	4.8	‡		†		85	2.2	524	2.6	‡		†		‡		†	‡	†	#		†
Netherlands	18		3.3	527	4.1	‡		†		71	3.8	551	2.0	‡		†		11		2.6	551	5.1	-10	!	4.9	▼
Macedonia, Rep. of	24		3.3	430	10.6	9	!	4.3	∆	58	4.0	454	7.4	#		†		17		3.0	427	14.8	‡		†
Kuwait	5	!	1.8	315	23.7	—		†		91	2.5	331	4.4	—		†		4	!	1.8	345	15.5	—		†

Iran, Islamic Rep. of	28		2.8	401	6.8	‡		†		44	3.7	422	5.3	‡		†		28		3.4	439	7.9	‡		†
Canada, Quebec	7		1.7	528	9.1	‡		†		91	2.1	535	3.1	‡		†		‡		†	‡	†	#		†
Canada, British Columbia¹	10		2.4	570	6.9	—		†		83	3.2	558	3.3	—		†		7	!	2.3	556	11.8	—		†
Canada, Ontario	6	!	1.9	539	6.1	‡		†		85	3.4	554	3.2	‡		†		9	!	3.1	563	7.2	‡		†
Scotland	11		2.6	525	10.7	#		†		71	4.3	528	3.3	#		†		18		3.8	524	7.2	#		†

Qatar²	12		0.2	352	5.3	—		†		68	0.3	354	1.5	—		†		20		0.2	344	3.1	—		†
New Zealand	10		1.2	508	8.4	‡		†		71	2.5	535	2.6	‡		†		19		2.4	539	4.4	‡		†
England	8		1.6	566	17.1	‡		†		71	3.8	536	3.7	23		5.8	∆	21		3.5	548	6.3	-22		5.8	▼
Israel	6	!	1.9	497	23.2	‡		†		49	4.1	527	6.4	‡		†		45		4.0	499	8.3	‡		†
Morocco	15		2.8	318	15.8	‡		†		35	3.9	338	10.5	‡		†		50		3.8	318	7.7	‡		†

Indonesia	19		2.3	391	8.1	—		†		32	3.8	408	7.2	—		†		49		3.7	408	6.3	—		†
Chinese Taipei	3		0.7	504	6.8	—		†		22	2.9	530	4.6	—		†		75		2.8	539	2.4	—		†
Hong Kong SAR³	1		0.6	‡	†	‡		†		18	3.3	544	6.1	‡		†		81		3.3	568	2.6	‡		†
Singapore	3	!	0.9	583	11.0	‡		†		‡	†	‡	—	-5	!	1.6	▼	96		1.1	558	3.0	‡		†
South Africa	3		0.8	244	31.8	—		†		16	2.4	355	21.7	—		†		81		2.4	292	6.3	—		†
† Not applicable.
# Rounds to zero.
! Interpret data with caution, estimates are unstable. The coefficient of variation is greater than or equal to .3 but less than .5.
‡ Reporting standards not met. Either data are insufficient to report achievement or the coefficient of variation is greater than or equal to .5.
∆ 2006 significantly higher.
▼2006 significantly lower.
¹ Data are available for at least 70 but less than 85 percent of the students.
² Data are available for at least 50 but less than 70 percent of the students.
³Hong Kong is a Special Administrative Region (SAR) of the People's Republic of China.
NOTE: The international average does not include the Canadian provinces. The primary education systems of the Russian Federation and Slovenia underwent structural changes. Data for Canada, Ontario include only public schools. Details may not sum to totals due to rounding. Standard error is noted by s.e. Differences are significant at the p<0.05 level.
SOURCE: Data from the International Association for the Evaluation of Educational Achievement (IEA), Progress in International Reading Literacy Study (PIRLS), 2006. Mullis, I.V.S., Martin, M.O., Kennedy, A.M., and Foy, P. (2007). PIRLS 2006 International Report, exhibit 5.16. Chestnut Hill, MA: Boston College.