Data acquisition was conducted in the months of January and February 2018 and the sample was based on information from homepages of upper secondary schools which have biology or biology related subjects in their curriculum.
Gagnaöflun fór fram í janúar og febrúar 2018. Úrtakið var byggt á upplýsingum af heimasíðum framhaldsskóla sem kenna líffræði eða líffræðitengdar greinar.