Validation state	Type of result	Average score	S.E.	Percentage of students reaching TIMSS benchmarks
Validation state	Type of result	Average score	S.E.	Advanced	S.E.	High	S.E.	Intermediate	S.E.	Low	S.E.
Alabama	Actual	485	6.2	5	1.0	24	2.7	56	3.5	83	1.9
Alabama	Predicted	488	4.1	4	1.5	23	2.7	58	2.5	85	1.5
California	Actual	499	4.6	6	0.7	28	1.9	62	2.5	88	1.6
California	Predicted	496	3.9	7	1.5	28	2.5	61	2.2	86	1.5
Colorado	Actual	542	4.4	14	1.6	48	2.6	80	2.0	96	0.7
Colorado	Predicted	547	3.8	16	2.5	51	3.2	81	1.9	96	0.6
Connecticut	Actual	532	4.6	14	1.5	45	2.5	74	2.0	92	1.3
Connecticut	Predicted	539	3.6	15	2.0	47	2.8	78	1.9	95	0.8
Florida	Actual	530	7.3	13	2.0	42	3.5	74	3.6	93	1.5
Florida	Predicted	533	3.6	13	1.8	44	2.7	75	1.9	94	0.7
Indiana	Actual	533	4.8	10	1.4	43	2.9	78	2.1	95	0.9
Indiana	Predicted	536	3.2	12	1.7	45	2.7	78	2.1	95	1.0
Massachusetts	Actual	567	5.1	24	2.6	61	2.8	87	1.5	96	0.7
Massachusetts	Predicted	561	3.6	23	2.4	59	2.8	84	1.7	96	0.6
Minnesota	Actual	553	4.6	16	1.9	54	2.6	85	2.0	98	0.7
Minnesota	Predicted	544	3.4	15	2.3	49	2.9	81	1.7	96*	0.5
North Carolina	Actual	532	6.3	12	2.2	42	3.2	75	3.0	94	1.4
North Carolina	Predicted	522	3.5	10	1.6	38	2.6	72	2.1	93	1.0
* Significantly different (p < .05) from actual results. NOTE: Validation states are those U.S. states that participated in the 2011 TIMSS assessment at the state level. The results for validation states include public schools only. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2011 Science Assessment; and International Association for the Evaluation of Educational Achievement (IEA), Trends in International Mathematics and Science Study (TIMSS), 2011.

State	Average score	S.E.
United States (public)	522	2.5
Alabama¹	485	6.2
Alaska	544	3.0
Arizona	507	3.8
Arkansas	521	3.5
California¹	499	4.6
Colorado¹	542	4.4
Connecticut¹	532	4.6
Delaware	528	2.9
District of Columbia	453	4.1
DoDEA²	546	3.2
Florida¹	530	7.3
Georgia	521	4.0
Hawaii	507	3.0
Idaho	536	3.0
Illinois	522	3.4
Indiana¹	533	4.8
Iowa	549	3.1
Kansas	534	3.1
Kentucky	534	3.1
Louisiana	514	4.5
Maine	554	2.8
Maryland	528	3.6
Massachusetts¹	567	5.1
Michigan	535	3.3
Minnesota¹	553	4.6
Mississippi	486	4.0
Missouri	537	3.6
Montana	551	3.1
Nebraska	541	3.0
Nevada	513	3.1
New Hampshire	557	3.0
New Jersey	549	3.7
New Mexico	512	3.1
New York	538	3.4
North Carolina¹	532	6.3
North Dakota	555	3.1
Ohio	547	3.3
Oklahoma	519	3.5
Oregon	536	3.3
Pennsylvania	536	3.9
Rhode Island	530	2.9
South Carolina	519	3.3
South Dakota	546	2.8
Tennessee	524	3.4
Texas	524	3.4
Utah	547	3.1
Vermont	561	3.2
Virginia	544	3.4
Washington	536	3.3
West Virginia	520	3.3
Wisconsin	551	3.5
Wyoming	549	2.8
¹ Validation state. ² Department of Defense Education Activity (overseas and domestic schools). NOTE: Validation states are those U.S. states that participated in the 2011 TIMSS assessment at the state level. Results for the United States and the validation states are based on actual results from the TIMSS science assessment, while results for all other states are predicted results. The results for all states and the U.S. include public schools only. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2011 Science Assessment; and International Association for the Evaluation of Educational Achievement (IEA), Trends in International Mathematics and Science Study (TIMSS), 2011.

Education system	Average score	S.E.
Abu Dhabi-UAE	461	4.0
Alberta-CAN	546	2.4
Armenia	437	3.1
Australia	519	4.8
Bahrain	452	2.0
Chile	461	2.5
Chinese Taipei-CHN	564	2.3
Dubai-UAE	485	2.5
England-GBR	533	4.9
Finland	552	2.5
Georgia	420	3.0
Ghana	306	5.2
Hong Kong SAR¹	535	3.4
Hungary	522	3.1
Indonesia	406	4.5
Iran, Islamic Republic of	474	4.0
Israel	516	4.0
Italy	501	2.5
Japan	558	2.4
Jordan	449	4.0
Kazakhstan	490	4.3
Korea, Republic of	560	2.0
Lebanon	406	4.9
Lithuania	514	2.6
Macedonia, Republic of	407	5.4
Malaysia	426	6.3
Morocco	376	2.2
New Zealand	512	4.6
Norway	494	2.6
Oman	420	3.2
Ontario-CAN	521	2.5
Palestinian National Authority	420	3.2
Qatar	419	3.4
Quebec-CAN	520	2.5
Romania	465	3.5
Russian Federation	542	3.2
Saudi Arabia	436	3.9
Singapore	590	4.3
Slovenia	543	2.7
Sweden	509	2.5
Syrian Arab Republic	426	3.9
Thailand	451	3.9
Tunisia	439	2.5
Turkey	483	3.4
Ukraine	501	3.4
United Arab Emirates	465	2.4
United States	525	2.6
¹ Hong Kong SAR is a Special Administrative Region (SAR) of the People's Republic of China. NOTE: Results for the education systems include public and private schools. SOURCE: International Association for the Evaluation of Educational Achievement (IEA), Trends in International Mathematics and Science Study (TIMSS), 2011.

State	Percentage of students at or above international benchmarks
State	Advanced	S.E.	High	S.E.	Intermediate	S.E.	Low	S.E.
United States (public)	9	0.7	39	1.4	73	1.1	93	0.6
Alabama¹	5	1.0	24	2.7	56	3.5	83	1.9
Alaska	16	1.8	50	2.6	80	1.8	95	0.7
Arizona	7	1.5	31	2.7	66	2.3	90	1.3
Arkansas	9	1.6	37	2.7	72	2.1	93	1.0
California¹	6	0.7	28	1.9	62	2.5	88	1.6
Colorado¹	14	1.6	48	2.6	80	2.0	96	0.7
Connecticut¹	14	1.5	45	2.5	74	2.0	92	1.3
Delaware	10	1.5	40	2.5	75	1.9	94	0.8
District of Columbia	3	0.6	17	1.4	45	1.9	73	2.0
DoDEA²	11	2.2	50	3.3	84	1.7	97	0.4
Florida¹	13	2.0	42	3.5	74	3.6	93	1.5
Georgia	10	2.0	38	3.0	71	2.3	92	1.1
Hawaii	7	1.3	31	2.2	65	2.0	90	1.2
Idaho	11	2.0	44	2.8	79	1.6	96	0.5
Illinois	9	1.5	37	2.6	72	2.0	93	1.0
Indiana¹	10	1.4	43	2.9	78	2.1	95	0.9
Iowa	14	1.9	52	2.9	84	1.7	97	0.5
Kansas	11	1.9	43	2.8	78	1.8	95	0.6
Kentucky	9	1.8	43	2.9	79	1.7	96	0.5
Louisiana	8	1.7	34	3.2	69	2.8	91	1.5
Maine	13	1.9	55	3.1	88	1.5	97	0.3
Maryland	13	1.9	42	2.7	73	2.0	93	1.0
Massachusetts¹	24	2.6	61	2.8	87	1.5	96	0.7
Michigan	13	2.1	45	2.8	77	1.8	95	0.7
Minnesota¹	16	1.9	54	2.6	85	2.0	98	0.7
Mississippi	3	1.2	22	2.6	57	2.5	86	1.6
Missouri	12	2.1	45	3.1	79	2.0	95	0.7
Montana	14	2.3	53	3.0	85	1.5	97	0.3
Nebraska	14	1.9	48	2.7	80	1.7	95	0.6
Nevada	7	1.3	33	2.4	69	2.0	92	1.1
New Hampshire	17	2.2	57	3.0	87	1.5	97	0.3
New Jersey	18	2.1	52	2.9	81	2.0	95	0.8
New Mexico	6	1.3	32	2.4	68	2.0	92	1.0
New York	16	1.6	46	2.4	77	1.9	94	1.0
North Carolina¹	12	2.2	42	3.2	75	3.0	94	1.4
North Dakota	13	2.3	56	3.2	88	1.4	97	0.2
Ohio	15	2.1	51	2.9	82	1.8	96	0.6
Oklahoma	8	1.6	35	2.8	72	2.2	93	1.0
Oregon	13	1.9	45	2.7	77	1.8	95	0.7
Pennsylvania	16	2.0	46	2.8	76	2.1	93	1.0
Rhode Island	14	1.6	43	2.3	73	1.8	92	1.0
South Carolina	9	1.6	36	2.6	71	2.0	92	1.0
South Dakota	12	2.1	50	2.9	84	1.4	97	0.3
Tennessee	10	1.7	39	2.7	73	2.0	93	0.9
Texas	10	1.9	39	2.7	73	1.9	93	0.8
Utah	15	2.2	51	2.8	83	1.6	96	0.4
Vermont	19	2.4	60	3.0	87	1.6	97	0.4
Virginia	15	2.2	49	2.9	81	1.7	96	0.6
Washington	12	2.0	45	2.8	78	1.8	95	0.6
West Virginia	6	1.5	34	2.8	73	2.1	94	0.8
Wisconsin	17	2.2	53	2.9	83	1.8	96	0.6
Wyoming	12	2.0	52	3.0	85	1.6	97	0.3
¹ Validation state. ² Department of Defense Education Activity (overseas and domestic schools). NOTE: Validation states are those U.S. states that participated in the 2011 TIMSS assessment at the state level. Results for the validation states are based on actual results from the TIMSS science assessment, while results for all other states are predicted results. The results for all states include public schools only. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2011 Science Assessment; and International Association for the Evaluation of Educational Achievement (IEA), Trends in International Mathematics and Science Study (TIMSS), 2011.

Education system	Percentage of students reaching international benchmarks
Education system	Advanced	S.E.	High	S.E.	Intermediate	S.E.	Low	S.E.
Abu Dhabi-UAE	4	0.7	17	1.5	45	1.9	74	1.5
Alberta-CAN	12	0.9	48	1.5	85	1.1	98	0.4
Armenia	1	0.2	12	0.8	37	1.5	66	1.3
Australia	11	1.6	35	2.5	70	2.0	92	0.8
Bahrain	3	0.3	17	0.7	44	1.0	70	0.7
Chile	1	0.2	12	0.9	43	1.4	79	1.5
Chinese Taipei-CHN	24	1.4	60	1.2	85	0.8	96	0.4
Dubai-UAE	7	0.7	28	1.0	57	1.3	79	1.0
England-GBR	14	1.5	44	2.6	76	2.3	93	1.2
Finland	13	1.2	53	1.7	88	1.0	99	0.3
Georgia	#	†	6	0.6	28	1.5	62	1.5
Ghana	#	†	1	0.2	6	0.8	22	1.7
Hong Kong SAR¹	9	1.1	47	1.8	80	1.7	95	1.0
Hungary	9	0.8	39	1.5	75	1.4	92	0.8
Indonesia	#	†	3	0.4	19	1.4	54	2.3
Iran, Islamic Republic of	5	0.7	21	1.3	50	2.0	79	1.5
Israel	11	1.1	39	1.7	69	1.7	88	1.1
Italy	4	0.5	27	1.4	65	1.4	90	1.1
Japan	18	1.1	57	1.3	86	0.9	97	0.4
Jordan	2	0.3	15	1.0	45	1.5	72	1.5
Kazakhstan	4	0.6	23	1.9	58	2.5	86	1.2
Korea, Republic of	20	0.9	57	1.1	86	0.7	97	0.4
Lebanon	1	0.2	7	0.8	25	2.0	54	2.3
Lithuania	6	0.7	33	1.4	71	1.3	92	0.6
Macedonia, Republic of	2	0.4	10	1.0	30	1.7	53	2.0
Malaysia	1	0.4	11	1.4	34	2.4	62	2.6
Morocco	#	†	2	0.2	13	0.7	39	1.0
New Zealand	9	1.0	34	2.2	67	2.2	90	1.2
Norway	3	0.4	22	1.2	62	1.4	90	1.1
Oman	2	0.2	11	0.5	34	1.0	59	1.3
Ontario-CAN	6	0.7	35	1.5	76	1.3	96	0.6
Palestinian National Authority	1	0.2	10	0.8	33	1.3	59	1.3
Qatar	3	0.5	14	1.1	34	1.4	58	1.2
Quebec-CAN	5	0.6	34	1.6	76	1.4	96	0.7
Romania	3	0.5	16	1.3	47	1.5	78	1.5
Russian Federation	14	1.1	48	1.8	81	1.2	96	0.7
Saudi Arabia	1	0.2	8	0.8	33	2.0	68	1.8
Singapore	40	1.7	69	2.0	87	1.6	96	0.7
Slovenia	13	0.8	48	1.4	82	1.2	96	0.5
Sweden	6	0.5	33	1.3	68	1.4	91	0.7
Syrian Arab Republic	#	†	6	0.8	29	1.8	63	1.9
Thailand	1	0.5	10	1.3	39	2.1	74	1.7
Tunisia	#	†	5	0.7	30	1.4	72	1.3
Turkey	8	0.9	26	1.4	54	1.4	79	1.0
Ukraine	6	0.8	29	1.7	64	1.6	88	1.1
United Arab Emirates	4	0.4	19	0.8	47	1.1	75	0.9
United States	10	0.7	40	1.3	73	1.1	93	0.7
† Not applicable. Standard error of the estimate cannot be accurately determined. # Rounds to zero. ¹ Hong Kong SAR is a Special Administrative Region (SAR) of the People's Republic of China. NOTE: Results for the education systems include public and private schools. SOURCE: International Association for the Evaluation of Educational Achievement (IEA), Trends in International Mathematics and Science Study (TIMSS), 2011.

NAEP-TIMSS Linking StudyScience Data Tables