Study title
TREE - TRansitions from Education to Employment
Ref study 12476
Study language English
Contributing institutions
  • Switzerland
  • School-to-work transitions
  • educational pathways & careers
  • occupational pathways & careers
  • lifecourse research
  • cognitive & non-cognitive skills
  • multi-cohort survey
  • multi-user survey
Cohort 1 (TREE1): begin in 2000, ongoing
Cohort 2 (TREE2): begin in 2016, ongoing
Geographical space
Switzerland, language regions (German, French, Italian), selected cantons (Berne, Geneva, St Gall, Ticino)
  • Switzerland
TREE (Transitions from Education to Employment) surveys post-compulsory educational and labour market pathways of school leavers in Switzerland, being the country’s first prospective longitudinal study of this type at national level. The project's first cohort (TREE1) is based on a sample of approximately 6,000 young people who participated in the PISA survey of the year 2000 and left compulsory school the same year. This sample has been followed up by means of seven survey panels at a yearly rhythm between 2001 and 2007 and two further survey panels in 2010 and 2014. A further panel wave is planned for 2019 (at average respondent's age 35).

In 2016, the longitudinal observation of a second school leavers' cohort has started. With this extension to a multi-cohort design, Switzerland is among the few countries worldwide in which comparative inter-cohort analyses can be carried out.

For more detail see project website .
For a complete list of publications, see project website: .
Methods (description)
Sample-based prospective longitudinal survey
Survey design: Mixed mode (CATI interview & written questionnaire)

Population (1st cohort TREE1): Youth who have completed compulsory school in 2000.
Sample design: stratified sample;
Sample size: valid sample at outset (2001): 6.343;
Survey rhythm: base survey (PISA) in 2000, 9 follow-up survey waves 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2010 and 2014;
Field work: Polling institute
Methods (instruments)
  • Other method instrument : Mixed mode (CATI interview & written questionnaire)
Replicated study No
Financed by
Ethical approval No
Study type
Data availability
Source (Updates) Web
Date created 03.10.2016
Date modified 20.05.2019
Start - End date 01.01.2000 -