Order		Cross- jurisdiction significant difference	Number of Jurisdictions Significantly			Not eligible average scale score
			higher	not different	lower	2009
			higher	not different	lower
1 Austin	Austin	>	0	1	14	176
2 Jefferson County (KY)	Jefferson County (KY)	>	0	4	11	171
3 San Diego	San Diego	x	1	6	8	167
4 Charlotte	Charlotte	x	1	6	8	166
5 Atlanta	Atlanta	x	1	6	8	166
National public	National public		2	6	9	163
6 Miami-Dade	Miami-Dade	x	2	6	7	161
7 Houston	Houston	x	2	8	5	159
8 New York City	New York City	x	2	9	4	158
Large city	Large city	<	6	6	5	157
9 Boston	Boston	<	5	6	4	156
10 Chicago	Chicago	<	6	6	3	154
11 Fresno	Fresno	<	6	7	2	151
12 Milwaukee	Milwaukee	<	7	6	2	148
13 Los Angeles	Los Angeles	<	9	5	1	146
14 Philadelphia	Philadelphia	<	10	4	1	137
15 Baltimore City	Baltimore City	<	12	2	1	136
16 Detroit	Detroit	<	15	0	0	122
N/A Cleveland	Cleveland	‡	‡	‡	‡	‡
‡ Reporting standards not met.
NOTE: National public and Large city are not included in sorting the jurisdictions. Score differences are calculated based on differences between unrounded scores.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2009 Science Assessment.