Average scale scores and percentages for grade 8 mathematics, by time per week on math instruction and jurisdiction: 2011, 2009, 2007, and 2005
Year	Jurisdiction	Less than 3 hours		3-4.9 hours		5-6.9 hours		7 hours or more
Year	Jurisdiction	Average scale score	Percentage	Average scale score	Percentage	Average scale score	Percentage	Average scale score	Percentage
# Rounds to zero. ‡ Reporting standards not met. NOTE: DoDEA = Department of Defense Education Activity. The NAEP Mathematics scale ranges from 0 to 500. 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), 2005, 2007, 2009, and 2011 Mathematics Assessments.
2011	National	285	2	288	61	280	28	273	9
2011	National public	283	2	287	60	279	29	273	9
2011	Alabama	‡	2	272	58	263	31	267	9
2011	Alaska	290	4	287	68	279	25	‡	3
2011	Arizona	‡	#	284	48	276	42	272	10
2011	Arkansas	‡	1	282	71	277	19	265	8
2011	California	275	3	279	65	266	23	248	8
2011	Colorado	‡	1	295	56	292	30	278	13
2011	Connecticut	‡	2	290	87	279	10	‡	1
2011	Delaware	‡	#	287	37	282	51	283	11
2011	District of Columbia	‡	2	282	29	250	42	258	27
2011	DoDEA	‡	#	290	84	285	12	283	5
2011	Florida	‡	1	281	72	273	22	262	5
2011	Georgia	‡	1	281	28	278	55	274	16
2011	Hawaii	279	3	279	76	279	17	272	4
2011	Idaho	‡	2	288	77	284	18	279	3
2011	Illinois	294	3	288	67	277	22	274	8
2011	Indiana	‡	2	288	74	283	19	282	6
2011	Iowa	‡	1	287	87	277	9	259	2
2011	Kansas	‡	1	294	69	286	18	276	12
2011	Kentucky	‡	#	282	49	281	41	285	10
2011	Louisiana	‡	2	276	38	269	40	278	20
2011	Maine	‡	3	290	61	287	34	‡	2
2011	Maryland	‡	1	299	43	281	35	280	21
2011	Massachusetts	‡	1	305	57	292	32	286	10
2011	Michigan	‡	1	283	55	276	41	262	4
2011	Minnesota	‡	1	297	74	293	22	281	3
2011	Mississippi	‡	1	274	62	263	28	254	9
2011	Missouri	‡	1	285	71	279	22	263	5
2011	Montana	‡	1	295	79	290	18	‡	2
2011	Nebraska	‡	1	284	84	281	11	278	4
2011	Nevada	‡	1	280	69	273	29	‡	2
2011	New Hampshire	‡	1	293	82	292	16	‡	1
2011	New Jersey	‡	1	302	56	288	28	279	14
2011	New Mexico	283	3	278	46	273	37	267	14
2011	New York	286	3	287	64	276	24	261	10
2011	North Carolina	279	2	290	25	286	56	286	16
2011	North Dakota	‡	1	293	77	288	16	302	6
2011	Ohio	286	2	292	68	287	21	277	9
2011	Oklahoma	‡	2	283	55	277	38	272	5
2011	Oregon	‡	2	282	76	282	20	‡	2
2011	Pennsylvania	‡	1	291	69	286	20	267	10
2011	Rhode Island	‡	2	287	75	282	21	‡	2
2011	South Carolina	‡	1	282	31	281	55	282	14
2011	South Dakota	‡	1	292	79	292	17	288	3
2011	Tennessee	‡	1	276	45	272	40	276	14
2011	Texas	287	2	295	54	288	32	286	12
2011	Utah	290	7	284	80	283	12	‡	1
2011	Vermont	‡	#	294	72	296	26	‡	1
2011	Virginia	‡	1	293	58	285	26	286	16
2011	Washington	‡	1	290	61	287	32	279	5
2011	West Virginia	‡	2	275	58	268	19	275	20
2011	Wisconsin	‡	1	292	73	284	22	270	4
2011	Wyoming	302	4	288	85	283	10	‡	1
2009	National	285	2	287	62	279	27	276	9
2009	National public	282	1	285	61	279	28	275	10
2009	Alabama	‡	1	271	57	264	32	278	10
2009	Alaska	‡	#	287	72	276	26	‡	2
2009	Arizona	‡	2	279	48	279	44	277	7
2009	Arkansas	273	5	280	67	272	20	262	8
2009	California	236	1	273	63	272	28	258	9
2009	Colorado	‡	1	292	56	287	33	268	10
2009	Connecticut	‡	1	290	89	287	9	‡	1
2009	Delaware	‡	#	290	29	282	55	286	16
2009	District of Columbia	‡	#	268	32	252	34	247	34
2009	DoDEA	‡	4	288	79	285	17	‡	#
2009	Florida	‡	2	278	66	283	29	272	3
2009	Georgia	‡	1	282	31	277	58	274	10
2009	Hawaii	274	6	276	77	271	14	257	3
2009	Idaho	‡	1	288	76	288	18	274	5
2009	Illinois	‡	2	287	75	273	20	273	3
2009	Indiana	291	3	288	82	287	12	281	3
2009	Iowa	276	3	284	85	286	10	‡	2
2009	Kansas	‡	2	293	58	290	27	272	12
2009	Kentucky	‡	2	281	43	281	45	273	11
2009	Louisiana	‡	2	279	41	271	32	269	26
2009	Maine	‡	2	287	71	286	27	‡	1
2009	Maryland	‡	#	300	37	283	36	282	27
2009	Massachusetts	‡	1	306	64	293	25	279	11
2009	Michigan	‡	3	283	49	276	44	273	4
2009	Minnesota	‡	2	295	74	292	21	‡	2
2009	Mississippi	‡	1	268	69	258	24	272	6
2009	Missouri	‡	2	287	73	284	24	‡	1
2009	Montana	287	4	293	76	289	19	‡	2
2009	Nebraska	289	2	285	85	274	7	285	5
2009	Nevada	‡	1	276	70	270	27	‡	2
2009	New Hampshire	‡	1	293	85	293	14	‡	1
2009	New Jersey	‡	1	301	58	287	30	273	11
2009	New Mexico	‡	1	273	49	263	28	271	22
2009	New York	‡	3	292	62	274	25	267	11
2009	North Carolina	‡	1	286	24	286	55	283	20
2009	North Dakota	‡	2	293	81	287	10	299	7
2009	Ohio	‡	2	288	72	278	17	286	9
2009	Oklahoma	‡	2	277	64	275	31	264	3
2009	Oregon	274	3	285	79	290	18	‡	#
2009	Pennsylvania	‡	1	293	77	278	15	264	7
2009	Rhode Island	‡	#	279	74	277	25	‡	1
2009	South Carolina	‡	#	282	25	279	57	287	18
2009	South Dakota	‡	2	291	79	293	17	‡	1
2009	Tennessee	‡	#	277	45	273	39	278	15
2009	Texas	310	1	289	56	284	23	283	20
2009	Utah	286	3	285	83	280	13	‡	1
2009	Vermont	‡	2	293	70	292	25	301	3
2009	Virginia	‡	1	291	59	278	22	283	17
2009	Washington	‡	1	292	63	288	28	274	7
2009	West Virginia	‡	1	271	51	269	27	271	21
2009	Wisconsin	‡	1	291	71	287	26	264	3
2009	Wyoming	‡	2	287	79	284	15	‡	4
2007	National	282	2	285	63	278	26	274	8
2007	National public	280	2	284	62	277	27	274	9
2007	Alabama	‡	#	267	56	263	33	271	11
2007	Alaska	‡	3	288	72	272	22	‡	3
2007	Arizona	268	2	277	54	277	40	267	4
2007	Arkansas	295	3	277	76	270	16	253	5
2007	California	266	2	277	66	268	27	254	5
2007	Colorado	‡	2	290	55	287	32	268	11
2007	Connecticut	‡	2	284	88	274	8	‡	1
2007	Delaware	‡	1	288	48	279	43	279	7
2007	District of Columbia	‡	3	255	37	244	35	252	25
2007	DoDEA	‡	1	286	78	281	19	‡	2
2007	Florida	275	4	280	67	277	24	271	5
2007	Georgia	‡	3	280	35	273	51	271	12
2007	Hawaii	266	6	272	83	266	9	‡	2
2007	Idaho	280	6	285	72	286	17	272	5
2007	Illinois	‡	1	285	74	272	22	267	3
2007	Indiana	288	6	287	77	281	16	‡	1
2007	Iowa	289	5	286	80	285	11	289	3
2007	Kansas	286	2	294	65	286	23	273	9
2007	Kentucky	‡	1	277	48	280	41	280	10
2007	Louisiana	‡	1	275	43	273	38	269	19
2007	Maine	294	3	286	74	287	22	‡	1
2007	Maryland	‡	#	294	43	284	26	279	30
2007	Massachusetts	‡	1	303	63	293	32	271	4
2007	Michigan	282	3	281	57	272	39	‡	1
2007	Minnesota	292	4	293	77	287	17	‡	2
2007	Mississippi	‡	#	268	57	264	33	258	10
2007	Missouri	283	5	283	77	273	17	‡	2
2007	Montana	‡	2	289	77	281	19	‡	1
2007	Nebraska	273	4	284	80	283	11	286	5
2007	Nevada	‡	2	272	68	271	29	‡	2
2007	New Hampshire	282	4	288	80	289	15	‡	1
2007	New Jersey	‡	1	295	55	286	32	267	12
2007	New Mexico	272	6	270	58	264	24	268	12
2007	New York	285	4	288	59	277	24	261	12
2007	North Carolina	‡	1	285	27	284	49	283	23
2007	North Dakota	‡	3	292	82	290	14	‡	2
2007	Ohio	283	2	289	75	275	17	271	6
2007	Oklahoma	‡	1	277	68	272	26	263	5
2007	Oregon	283	3	284	76	282	19	‡	1
2007	Pennsylvania	‡	2	293	66	281	19	270	13
2007	Rhode Island	267	3	278	74	272	23	‡	#
2007	South Carolina	‡	#	279	26	283	55	285	19
2007	South Dakota	291	4	288	77	293	15	283	4
2007	Tennessee	‡	1	277	48	271	40	280	12
2007	Texas	290	2	287	59	284	22	285	17
2007	Utah	284	6	281	85	282	7	‡	2
2007	Vermont	‡	3	290	65	292	30	‡	1
2007	Virginia	‡	2	290	67	281	21	287	10
2007	Washington	‡	1	288	63	282	28	281	8
2007	West Virginia	‡	1	271	59	271	22	269	17
2007	Wisconsin	‡	1	289	77	281	20	‡	2
2007	Wyoming	293	5	287	84	284	10	‡	1
2005	National	276	3	283	66	275	24	272	7
2005	National public	274	3	282	66	274	24	271	7
2005	Alabama	‡	2	266	62	258	26	261	11
2005	Alaska	285	4	280	72	278	21	273	3
2005	Arizona	265	3	278	65	272	26	269	6
2005	Arkansas	‡	2	274	67	269	23	267	8
2005	California	264	4	272	67	270	26	271	3
2005	Colorado	285	4	284	68	279	22	270	7
2005	Connecticut	‡	2	283	86	270	12	‡	#
2005	Delaware	‡	#	279	69	285	27	292	4
2005	District of Columbia	238	5	249	43	246	38	242	14
2005	DoDEA	‡	2	286	83	279	12	‡	3
2005	Florida	263	3	279	63	271	29	272	5
2005	Georgia	‡	2	275	38	274	43	268	17
2005	Hawaii	267	6	269	87	264	6	‡	1
2005	Idaho	274	4	281	75	283	19	‡	2
2005	Illinois	274	5	283	72	269	18	270	4
2005	Indiana	‡	2	283	82	279	15	‡	2
2005	Iowa	278	6	285	78	279	14	‡	1
2005	Kansas	274	3	287	71	280	23	255	4
2005	Kentucky	‡	1	274	54	275	38	273	7
2005	Louisiana	‡	#	269	46	269	35	264	18
2005	Maine	283	4	283	70	283	25	‡	1
2005	Maryland	‡	1	287	43	274	27	273	29
2005	Massachusetts	‡	2	296	73	286	20	276	6
2005	Michigan	‡	1	283	64	270	32	‡	3
2005	Minnesota	‡	2	292	78	286	18	‡	1
2005	Mississippi	‡	2	265	67	257	24	259	7
2005	Missouri	265	5	278	78	278	15	‡	2
2005	Montana	‡	2	289	86	276	10	‡	2
2005	Nebraska	250	4	286	80	285	12	281	4
2005	Nevada	‡	3	270	65	270	29	261	3
2005	New Hampshire	284	4	286	81	288	15	‡	1
2005	New Jersey	‡	1	289	72	282	20	267	7
2005	New Mexico	262	4	265	62	262	27	269	8
2005	New York	283	5	289	65	269	21	265	9
2005	North Carolina	‡	#	282	26	283	47	281	27
2005	North Dakota	‡	2	287	86	283	12	‡	#
2005	Ohio	280	3	287	76	273	16	275	5
2005	Oklahoma	273	4	272	66	269	27	272	3
2005	Oregon	274	3	281	73	291	22	‡	1
2005	Pennsylvania	‡	2	286	74	276	16	252	9
2005	Rhode Island	‡	2	277	79	267	18	‡	1
2005	South Carolina	‡	3	284	22	281	55	286	20
2005	South Dakota	287	3	288	78	289	16	273	3
2005	Tennessee	‡	1	274	56	268	34	276	9
2005	Texas	273	3	284	68	277	19	277	10
2005	Utah	283	5	280	82	274	12	‡	1
2005	Vermont	294	4	286	74	293	21	‡	2
2005	Virginia	‡	2	288	65	278	24	277	9
2005	Washington	298	4	287	69	282	25	‡	2
2005	West Virginia	273	4	270	69	273	19	263	9
2005	Wisconsin	283	3	288	75	281	21	‡	1
2005	Wyoming	‡	3	284	81	278	14	‡	2