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	0	15	173
2 Jefferson County (KY)	Jefferson County (KY)	x	1	3	11	161
National public	National public		1	3	13	161
3 Houston	Houston	x	1	7	7	157
4 Charlotte	Charlotte	<	2	6	7	155
5 Fresno	Fresno	<	1	9	5	155
6 San Diego	San Diego	x	1	11	3	154
Large city	Large city	<	3	9	5	152
7 Atlanta	Atlanta	<	2	10	3	151
8 Miami-Dade	Miami-Dade	<	3	8	4	150
9 Boston	Boston	<	4	8	3	148
10 New York City	New York City	<	3	10	2	146
11 Los Angeles	Los Angeles	<	5	8	2	143
12 Philadelphia	Philadelphia	<	2	12	1	143
13 Chicago	Chicago	<	6	7	2	142
14 Milwaukee	Milwaukee	<	9	4	2	139
15 Baltimore City	Baltimore City	<	13	2	0	128
16 Detroit	Detroit	<	14	1	0	121
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.