Prospective studies, which compare early career aspirations with actual careers observed during follow-up surveys for the same individuals, confirm the importance of adolescent career aspirations for career choices more generally (Ashby and Schoon, 201 On?], In PISA 2015, teachers reported whether pursuing a career in the teaching profession was their goal after completing upper secondary school. On average across 14 countries that distributed the teacher questionnaire in 2015 and that have available data in both PISA 2015 and 2006, about 62% of 20-35 year-old teachers who teach 15-year-old students had chosen to become teachers by the end of secondary school (Figure 4.1 ).4 The data also highlight substantial variations across countries.