Table 7. Difference between the estimated NAEP scale equivalents of state proficiency standards for mathematics at grade 8, by state: 2009 and 2005

State/jurisdiction	2009 NAEP scale equivalent	2005 NAEP scale equivalent	Change from 2005 NAEP scale equivalent		Standard error of the difference	2005 and 2009 tests are comparable ¹
Alabama	246	–	†		†	Yes
Alaska	268	268	0.4		2.60	Yes
Arizona	266	265	1.0		1.21	Yes
Arkansas	267	288	-20.5	*	1.32	Yes
California	–	–	†		†	No
Colorado	256	258	-1.5		2.28	Yes
Connecticut	251	257	-5.7	*	2.39	No
Delaware	269	275	-6.5	*	1.17	No
District of Columbia	258	–	†		†	No
Florida	266	269	-3.6	*	1.59	Yes
Georgia	247	255	-7.7	*	1.58	No
Hawaii	286	296	-10.1	*	1.76	No
Idaho	261	266	-4.3	*	1.92	No
Illinois	251	276	-24.8	*	1.86	No
Indiana	273	266	7.4	*	1.74	No
Iowa	263	262	0.5		1.78	Yes
Kansas	265	–	†		†	No
Kentucky	273	285	-12.1	*	1.53	No
Louisiana	263	264	-1.2		1.10	Yes
Maine	284	300	-15.4	*	1.42	No
Maryland	271	276	-4.9	*	2.49	Yes
Massachusetts	300	301	-0.5		1.57	No
Michigan	253	269	-15.7	*	1.92	No
Minnesota	287	–	†		†	No
Mississippi	264	262	2.0		1.70	No
Missouri	287	311	-23.9	*	1.62	No
Montana	285	271	13.8	*	1.44	No
Nebraska	–	–	†		†	No
Nevada	269	271	-1.3		1.95	Yes
New Hampshire	281	–	†		†	No
New Jersey	272	273	-1.1		1.56	No
New Mexico	277	287	-9.6	*	2.14	Yes
New York	249	275	-26.0	*	2.01	No
North Carolina	253	247	5.7	*	1.94	No
North Dakota	278	277	1.5		1.26	Yes
Ohio	265	274	-8.9	*	1.60	Yes
Oklahoma	269	258	10.9	*	1.28	No
Oregon	266	269	-3.4	*	1.58	No
Pennsylvania	272	272	0.1		1.61	Yes
Rhode Island	275	–	†		†	Yes
South Carolina	270	305	-35.6	*	1.42	No
South Dakota	271	–	†		†	Yes
Tennessee	229	230	-1.0		2.32	Yes
Texas	254	272	-18.0	*	1.42	Yes
Utah	275	–	†		†	Yes
Vermont	282	–	†		†	Yes
Virginia	251	253	-1.6		1.94	No
Washington	288	–	†		†	No
West Virginia	270	253	16.8	*	1.13	No
Wisconsin	262	263	-1.8		1.93	Yes
Wyoming	278	293	-14.9	*	1.35	No
– State assessment data not available.
† Not applicable.
* Statistically significant at p<.05.
¹State assessment is comparable between years when state confirmed making no substantive changes in the assessment.
NOTE: Differences are computed using unrounded numbers. Standard errors of the NAEP scale equivalents are listed in Table 1b and Table 3b.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2005 and 2009 Mathematics Assessments. U.S. Department of Education, Office of Planning, Evaluation and Policy Development, EDFacts SY 2008–09, Washington, DC, 2010. The National Longitudinal School-Level State Assessment Score Database (NLSLSASD) 2010.

Last updated 05 August 2011 (AA)