The High School Longitudinal Study of 2009 (HSLS:09) is a nationally representative, longitudinal study of more than 21,000 9th graders in 944 schools who will be followed throughout their secondary and postsecondary years. The study focuses on understanding students' trajectories from the beginning of high school into postsecondary education, the workforce, and beyond. What students decide to pursue when, why, and how are crucial questions for HSLS:09, especially, but not solely, in regards to science, technology, engineering, and math (STEM) courses, majors, and careers. This study features a new student assessment in algebraic skills, reasoning, and problem solving and includes, like past studies, surveys of students, their parents, math and science teachers, school administrators, as well as a new survey of school counselors. The first wave of data collection for HSLS:09 began in the fall of 2009 and produced not only a nationally representative dataset but also state representative datasets for each of ten states. The next data collection begins in January 2012.
Data files and documentation for the First Follow-up are currently being developed. Expect release of data in late 2013.
Data collection for the first follow-up is currently underway!
Data and Documentation
NEW! The HSLS:09 Base Year Public-Use Data File is now available for download from the EDAT or at the "Data and Documentation" link on the left menu.
HSLS:09 collected data from students, parents, teachers, school counselors, and school administrators from September 2009 through April 2010. In addition, an algebra assessment was administered to each student as a baseline for high school math knowledge.
Questionnaires are now posted on this website.