The global challenge of the green transition, aimed at achieving net-zero emissions, is expected to reshape the labour market significantly. This shift presents both economic and redistributive challenges, with a particular concern for young people entering the job market. Education plays a crucial role in preparing students with the knowledge, skills, attitudes, and values needed for green careers. However, there is a gap in how well schools are preparing students for these opportunities. Effective career guidance systems are essential to serve as bridges between students' interests and labour market demands. This study examined 87 programmes within primary and secondary education across 20 OECD countries, aimed at enhancing students' understanding of and progression towards green careers. These programmes, though not exhaustive, provide valuable insights into the conceptualisation and implementation of green guidance programmes, which are expected to become increasingly important in the future.