Skip Navigation
small NCES header image

Long-Term Trend Assessments

Long-term trend (LTT) assessments are administered according to the frameworks and assessment practices in force during the 1970s and 1980s, and are conducted every four years. LTT was most recently administered in 2012, and is next scheduled for 2016. While national main and state assessments are administered to grade-level student samples (grades 4, 8, and 12) during a single field period, long-term trend assessments are administered to age-based samples (ages 9, 13, and 17) during different periods throughout the school year:

  • October through December for 13-year-olds,
  • January through March for 9-year-olds, and
  • March through May for 17-year-olds.

For more information about the differences between national main and long-term-trend assessments, see the page titled What Are the Differences Between Long-Term Trend NAEP and Main NAEP?.

See the page titled Long-Term Trend for additional information about how the long-term trend assessments fit into NAEP.

Last updated 19 September 2012 (GF)
Would you like to help us improve our products and website by taking a short survey?

YES, I would like to take the survey


No Thanks

The survey consists of a few short questions and takes less than one minute to complete.
National Center for Education Statistics -
U.S. Department of Education