Order		Cross- jurisdiction significant difference	Number of Jurisdictions Significantly			Not eligible percent at or above Basic
			higher	not different	lower	2009
			higher	not different	lower
1 Austin	Austin	>	0	4	11	92
2 Jefferson County (KY)	Jefferson County (KY)	>	0	4	11	91
3 San Diego	San Diego	x	0	7	8	89
4 Charlotte	Charlotte	x	0	10	5	87
National public	National public		2	9	6	86
5 Atlanta	Atlanta	x	0	10	5	86
6 Miami-Dade	Miami-Dade	x	2	8	5	84
7 Houston	Houston	x	2	10	3	81
8 New York City	New York City	x	2	10	3	80
9 Boston	Boston	x	3	9	3	79
10 Chicago	Chicago	x	3	9	3	79
Large city	Large city	<	7	7	3	78
11 Fresno	Fresno	x	3	9	3	76
12 Milwaukee	Milwaukee	<	6	7	2	71
13 Los Angeles	Los Angeles	<	6	8	1	69
14 Philadelphia	Philadelphia	<	11	4	0	56
15 Baltimore City	Baltimore City	<	12	3	0	54
16 Detroit	Detroit	<	13	2	0	39
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.