Average scale scores and percentages for grade 8 science, by how often students work with others on activities and jurisdiction: 2011 and 2009
Year	Jurisdiction	Never or hardly ever		Once or twice a month		Once or twice a week		Every day or almost every day
Year	Jurisdiction	Average scale score	Percentage	Average scale score	Percentage	Average scale score	Percentage	Average scale score	Percentage
— Not available. # Rounds to zero. ‡ Reporting standards not met. NOTE: DoDEA = Department of Defense Education Activity. The NAEP Science scale ranges from 0 to 300. Detail may not sum to totals because of rounding. Some apparent differences between estimates may not be statistically significant. Analyze results with NAEP Data Explorer. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2009 and 2011 Science Assessments.
2011	National	147	2	151	29	153	47	154	22
2011	National public	145	2	149	28	153	47	154	22
2011	Alabama	134	6	136	40	144	38	142	16
2011	Alaska	‡	3	152	20	154	52	161	24
2011	Arizona	137	5	143	24	144	45	150	26
2011	Arkansas	140	3	146	41	150	47	149	10
2011	California	‡	1	140	29	141	47	145	23
2011	Colorado	‡	1	159	17	161	42	163	40
2011	Connecticut	‡	1	151	29	162	45	157	25
2011	Delaware	156	4	154	7	150	52	154	37
2011	District of Columbia	119	4	100	25	120	45	113	27
2011	DoDEA	161	5	160	29	163	43	157	23
2011	Florida	‡	1	147	31	149	44	151	24
2011	Georgia	‡	1	149	32	153	50	152	17
2011	Hawaii	‡	2	140	37	143	43	148	18
2011	Idaho	158	4	156	29	161	46	160	22
2011	Illinois	147	3	148	27	149	41	151	30
2011	Indiana	‡	2	152	34	156	45	152	20
2011	Iowa	‡	#	158	25	157	45	158	30
2011	Kansas	‡	3	156	25	156	52	159	20
2011	Kentucky	157	3	159	32	157	44	156	22
2011	Louisiana	137	5	142	38	145	42	143	14
2011	Maine	‡	#	159	22	162	49	158	29
2011	Maryland	‡	3	149	19	153	43	155	35
2011	Massachusetts	‡	2	157	24	164	54	164	20
2011	Michigan	151	4	150	29	160	51	163	16
2011	Minnesota	‡	2	160	25	163	55	159	18
2011	Mississippi	134	7	137	52	140	36	146	5
2011	Missouri	154	4	156	32	160	40	155	24
2011	Montana	‡	1	161	25	163	51	168	23
2011	Nebraska	‡	2	158	24	157	51	156	24
2011	Nevada	‡	3	138	24	147	52	146	21
2011	New Hampshire	‡	1	164	18	164	50	160	31
2011	New Jersey	‡	2	153	22	155	43	158	34
2011	New Mexico	142	3	144	30	146	42	145	26
2011	New York	‡	2	149	27	153	49	149	22
2011	North Carolina	‡	2	147	29	150	49	146	20
2011	North Dakota	‡	2	164	41	164	46	167	11
2011	Ohio	145	3	159	35	160	47	157	15
2011	Oklahoma	‡	3	149	39	148	46	153	11
2011	Oregon	‡	1	154	18	156	55	157	25
2011	Pennsylvania	‡	3	150	29	154	52	158	16
2011	Rhode Island	‡	#	148	23	153	50	151	27
2011	South Carolina	136	3	143	23	151	51	154	24
2011	South Dakota	‡	1	165	33	164	49	157	17
2011	Tennessee	142	4	150	40	152	47	148	10
2011	Texas	‡	2	155	26	152	51	155	22
2011	Utah	‡	2	161	30	162	48	166	20
2011	Vermont	‡	2	166	24	163	41	163	33
2011	Virginia	156	5	158	27	159	44	166	23
2011	Washington	‡	#	156	17	155	41	160	42
2011	West Virginia	‡	2	146	29	150	50	153	19
2011	Wisconsin	‡	1	157	18	161	50	164	32
2011	Wyoming	‡	#	163	15	161	59	158	26
2009	National	143	3	150	31	152	45	152	21
2009	National public	143	3	148	30	150	45	152	22
2009	Alabama	147	5	135	38	139	33	145	24
2009	Alaska	—	—	—	—	—	—	—	—
2009	Arizona	143	3	138	20	144	43	142	34
2009	Arkansas	138	4	143	41	147	43	143	12
2009	California	128	4	133	33	138	42	143	22
2009	Colorado	‡	2	159	18	156	49	155	31
2009	Connecticut	‡	1	152	25	157	54	160	20
2009	Delaware	‡	2	152	23	146	31	150	44
2009	District of Columbia	—	—	—	—	—	—	—	—
2009	DoDEA	‡	2	163	22	163	43	163	33
2009	Florida	144	2	145	29	147	46	148	23
2009	Georgia	‡	1	147	30	147	52	151	16
2009	Hawaii	‡	2	137	39	139	33	137	26
2009	Idaho	‡	2	154	30	160	54	159	14
2009	Illinois	150	3	150	30	150	42	148	25
2009	Indiana	146	3	154	34	154	49	151	14
2009	Iowa	146	4	160	27	154	41	157	28
2009	Kansas	—	—	—	—	—	—	—	—
2009	Kentucky	163	4	160	29	154	49	155	17
2009	Louisiana	‡	2	136	34	144	45	140	19
2009	Maine	‡	1	157	26	159	54	159	19
2009	Maryland	160	3	148	19	149	43	151	35
2009	Massachusetts	159	3	160	28	160	40	163	30
2009	Michigan	‡	2	150	37	157	51	158	10
2009	Minnesota	‡	1	158	24	160	51	160	23
2009	Mississippi	127	8	135	45	132	42	121	4
2009	Missouri	‡	2	157	34	158	45	157	19
2009	Montana	‡	3	164	26	163	49	162	23
2009	Nebraska	—	—	—	—	—	—	—	—
2009	Nevada	142	3	142	21	140	49	145	27
2009	New Hampshire	‡	#	159	31	160	48	163	21
2009	New Jersey	‡	2	151	26	159	41	155	31
2009	New Mexico	141	2	145	31	143	49	144	18
2009	New York	143	3	148	31	150	47	159	19
2009	North Carolina	141	3	142	27	147	48	145	22
2009	North Dakota	‡	1	163	40	164	48	162	11
2009	Ohio	154	5	156	32	160	42	161	21
2009	Oklahoma	145	9	145	40	149	38	148	13
2009	Oregon	‡	1	154	21	155	51	155	26
2009	Pennsylvania	143	3	154	33	155	45	160	19
2009	Rhode Island	‡	1	148	22	150	46	143	31
2009	South Carolina	‡	1	140	29	147	49	145	22
2009	South Dakota	156	6	163	27	161	55	158	12
2009	Tennessee	145	6	149	45	149	44	146	6
2009	Texas	133	4	153	27	151	48	149	20
2009	Utah	‡	2	158	33	157	44	160	22
2009	Vermont	—	—	—	—	—	—	—	—
2009	Virginia	158	3	154	28	156	47	159	23
2009	Washington	‡	1	153	16	153	35	158	47
2009	West Virginia	‡	2	148	29	144	51	146	18
2009	Wisconsin	‡	2	158	28	159	43	158	27
2009	Wyoming	‡	#	157	23	159	43	160	34