By comparison, the number of teachers in primary, lower secondary and upper secondary education represented about 2.4% of the labour force across OECD countries in 2013.6This means that, in general, the share of students expecting a teaching career is larger than the share of working-age people who are teaching today. At least at this early stage of career orientation, concerns about the lack of candidates for a career in teaching are therefore exaggerated. In fact, teaching enjoys a clear advantage over other occupations that 15-year-olds may not even know exist: all 15-year-old students have had some contact with teachers and have at least an approximate idea of what they do and of their working conditions.