Order		Cross- jurisdiction significant difference	Number of Jurisdictions Significantly			Not eligible average scale score	Eligible average scale score	Not eligible - Eligible Gap average scale score
			higher	not different	lower	2009
			higher	not different	lower
1 Austin	Austin	>	0	0	15	173	130	43
2 Fresno	Fresno	>	1	4	10	155	119	35
3 Atlanta	Atlanta	x	1	11	3	151	120	30
4 Charlotte	Charlotte	x	1	11	3	155	126	29
5 San Diego	San Diego	x	1	13	1	154	125	29
6 Philadelphia	Philadelphia	x	1	13	1	143	115	28
National public	National public	x	2	12	3	161	133	28
7 Jefferson County (KY)	Jefferson County (KY)	x	2	10	3	161	133	28
Large city	Large city		2	12	3	152	125	27
8 Boston	Boston	x	2	12	1	148	123	25
9 Chicago	Chicago	x	2	12	1	142	118	24
10 Houston	Houston	x	2	12	1	157	133	24
11 Los Angeles	Los Angeles	x	2	12	1	143	119	24
12 Milwaukee	Milwaukee	x	2	13	0	139	118	22
13 Miami-Dade	Miami-Dade	<	5	10	0	150	130	20
14 New York City	New York City	x	2	13	0	146	125	20
15 Baltimore City	Baltimore City	<	5	10	0	128	110	17
16 Detroit	Detroit	<	11	4	0	121	110	11
N/A Cleveland	Cleveland	‡	‡	‡	‡	‡	121	‡
‡ 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.