The Danish sustainability indicators
The data shows the development in the proportion of students in the various forms of upper secondary education (higher preparatory, higher commercial, higher general and higher technical programmes and International Baccalaureate), who respond that they ‘completely agree’ or ‘agree’ to the question, ‘I am happy to go to school’.
https://www.dst.dk/en/Statistik/temaer/SDG/danske-maalepunkter