Standard errors for the percentile distribution of average reading and mathematics scores of 4th- and 8th-grade public school students and the percentage of students at each achievement level, by school location: 2003

Student Reading and Mathematics Performance in Public Schools by Urbanicity

Table S14-2. Standard errors for the percentile distribution of average reading and mathematics scores of 4th- and 8th-grade public school students and the percentage of students at each achievement level, by school location: 2003

	Reading					Mathematics
Grade, percentile, and achievement level	All public schools	All central city schools	Large central city schools	Urban fringe schools	Rural schools	All public schools	All central city schools	Large central city schools	Urban fringe schools	Rural schools

	Average score
Grade 4	0.3	0.6	1.0	0.3	0.5	0.2	0.5	0.8	0.3	0.3
Grade 8	0.2	0.5	1.2	0.5	0.4	0.3	0.5	1.0	0.5	0.4
Percentile
Grade 4
10th	0.5	0.9	1.4	0.6	1.0	0.3	0.5	1.1	0.7	0.6
25th	0.4	0.8	1.3	0.3	0.7	0.3	0.6	0.8	0.5	0.4
50th	0.4	0.7	0.9	0.4	0.7	0.2	0.5	0.9	0.4	0.3
75th	0.2	0.5	1.1	0.4	0.4	0.3	0.6	1.0	0.4	0.3
90th	0.3	0.5	2.0	0.4	0.5	0.2	0.5	1.1	0.5	0.3
Grade 8
10th	0.5	1.0	2.3	1.0	0.9	0.6	0.8	1.8	0.8	0.7
25th	0.3	0.7	1.6	0.6	0.5	0.4	0.7	1.3	0.5	0.5
50th	0.3	0.5	1.2	0.6	0.4	0.4	0.7	1.2	0.5	0.4
75th	0.3	0.4	0.9	0.5	0.5	0.3	0.5	1.1	0.3	0.5
90th	0.3	0.6	0.9	0.4	0.5	0.3	1.0	1.8	0.7	0.4

	Percentage at achievement level
Grade 4
Below Basic	0.3	0.6	1.0	0.4	0.6	0.3	0.7	1.1	0.4	0.5
At or above Basic	0.3	0.6	1.0	0.4	0.6	0.3	0.7	1.1	0.4	0.5
At or above Proficient	0.3	0.5	0.9	0.4	0.5	0.3	0.6	0.9	0.5	0.4
At Advanced	0.1	0.2	0.4	0.2	0.2	0.1	0.2	0.3	0.2	0.2
Grade 8
Below Basic	0.3	0.6	1.3	0.4	0.4	0.3	0.7	1.3	0.5	0.5
At or above Basic	0.3	0.6	1.3	0.4	0.4	0.3	0.7	1.3	0.5	0.5
At or above Proficient	0.3	0.5	0.9	0.5	0.5	0.3	0.5	0.8	0.5	0.4
At Advanced	0.1	0.1	0.2	0.1	0.1	0.1	0.2	0.3	0.3	0.2

SOURCE: U.S. Department of Education, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2003 Reading and Mathematics Assessments, previously unpublished tabulation (January 2005).