July 2003
Students' average scores on the NAEP writing assessment increased between 1998 and 2002 at grades 4 and 8. However, there was no significant change detected in the average performance of twelfth-graders over the same period. |
* Significantly different from 2002. |
This writing assessment was first administered to nationally representative samples of fourth-, eighth-, and twelfth-grade students in 1998. The figure above shows national average scores in 1998 and 2002 based on the 0300 NAEP writing scale at each grade.
Average test scores have a standard errora range of a few points plus or minus the scoredue to sampling error and measurement error. Statistical tests are used to determine whether the differences between average scores are significant; therefore, not all apparent differences may be found to be statistically significant. All differences cited in this report were tested for statistical significance (see the technical appendix of The Nation's Report Card: Writing 2002 for details).