This datafile contains the U.S. TIMSS Advanced 2015 data, including data that were collected only in the United States and not included on the international database available from the IEA. The additional data relate to the race and ethnicity of students and the percentage of students in a school eligible for the Federal free and reduced-price lunch program, among other variables. This datafile is intended to be used in conjunction with the international datafile available from the IEA.
