Data are subject to appreciable nonresponse bias. The NAEP scores have been evaluated at certain performance levels. Scale ranges from 0 to 300. Excludes states not participating in the survey. Some data have been revised from previously published figures.
Standard errors appear in parentheses.
U.S. Department of Education, National Center for Education Statistics, National Assessment of Educational Progress, NAEP 1996 Science Report Card for the Nation and the States, prepared by Educational Testing Service.