Standard errors for the average reading scale scores and percentage of students at each achievement level, by grade: Selected years, 1992

Academic Outcomes

Table S12-1. Standard errors for the average reading scale scores and percentage of students at each achievement level, by grade: Selected years, 1992–2007

Grade, scale score, and achievement level	1992¹	1994¹	1998¹	1998	2002	2003	2005	2007

Grade 4
Average scale score	0.9	1.0	0.8	1.1	0.4	0.3	0.2	0.3
Percentage at each achievement level
Below Basic	1.1	1.0	0.9	1.2	0.5	0.3	0.3	0.3
At or above Basic	1.1	1.0	0.9	1.2	0.5	0.3	0.3	0.3
At or above Proficient	1.2	1.1	0.9	0.9	0.4	0.3	0.2	0.3
At Advanced	0.6	0.7	0.5	0.5	0.2	0.1	0.1	0.2

Grade 8
Average scale score	0.9	0.8	0.8	0.8	0.4	0.3	0.2	0.2
Percentage at each achievement level
Below Basic	1.0	0.9	0.9	0.8	0.5	0.3	0.2	0.2
At or above Basic	1.0	0.9	0.9	0.8	0.5	0.3	0.2	0.2
At or above Proficient	1.1	0.9	0.9	1.1	0.5	0.3	0.2	0.2
At Advanced	0.3	0.3	0.4	0.3	0.2	0.1	0.1	0.1

Grade 12
Average scale score	0.6	0.7	0.7	0.6	0.7	†	0.6	†
Percentage at each achievement level
Below Basic	0.6	0.7	0.9	0.7	0.8	†	0.8	†
At or above Basic	0.6	0.7	0.9	0.7	0.8	†	0.8	†
At or above Proficient	0.8	1.0	0.9	0.7	0.8	†	0.7	†
At Advanced	0.3	0.5	0.4	0.4	0.3	†	0.3	†

† Not applicable.
¹ Testing accommodations (e.g., extended time, small group testing) for children with disabilities and limited-English-proficient students were not permitted.
SOURCE: U.S. Department of Education, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), selected years, 1992–2007 Reading Assessments, NAEP Data Explorer.