This CD-ROM contains data and documentation files for the NAEP 2000 mathematics assessments for use in the analysis of NAEP data by secondary researchers. The national assessment was conducted at grades 4, 8, and 12. The state assessments were conducted at grades 4 and 8. This CD contains the grade 4 data. The grade 8 data are available on a separate CD-ROM (see NCES 2003506R). A Data Companion is provided in electronic portable document format (PDF). This document contains information on the contents and use of the data files as well as the assessment design and its implications for analysis. NAEP datasets from 2002 onward require a Tool Kit with the updated NAEPEX. Your organization must apply for and be granted a restricted-use data license in order to obtain these data.