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	2	13	176	130	46
2 Atlanta	Atlanta	>	0	2	13	166	123	43
3 San Diego	San Diego	>	0	6	9	167	128	39
4 Jefferson County (KY)	Jefferson County (KY)	x	2	7	6	171	136	35
5 Charlotte	Charlotte	x	2	8	5	166	132	34
6 Fresno	Fresno	x	2	9	4	151	118	33
7 Chicago	Chicago	x	2	9	4	154	120	33
Large city	Large city		3	11	3	157	126	30
National public	National public	x	4	10	3	163	134	29
8 Houston	Houston	x	3	11	1	159	130	29
9 Milwaukee	Milwaukee	x	3	11	1	148	120	29
10 Miami-Dade	Miami-Dade	x	5	9	1	161	135	26
11 Los Angeles	Los Angeles	x	3	11	1	146	120	26
12 New York City	New York City	x	4	11	0	158	132	25
13 Baltimore City	Baltimore City	<	7	8	0	136	114	22
14 Boston	Boston	<	7	8	0	156	134	21
15 Philadelphia	Philadelphia	x	7	8	0	137	119	18
16 Detroit	Detroit	<	11	4	0	122	108	13
N/A Cleveland	Cleveland	‡	‡	‡	‡	‡	114	‡
‡ 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.