This CD-ROM contains data and documentation files for the NAEP Mathematics Long-Term Trend assessments at ages 9, 13, and 17 for the years 1978, 1982, 1986, 1990, 1992, 1994, 1996, 1999, and 2004 for use in the analysis of NAEP data by secondary researchers. 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. Your organization must apply for and be granted a restricted-use data license in order to obtain these data.
