SDG #13 is to “Take urgent action to combat climate change and its impacts”
Within SDG #13 are 5 targets, of which we here focus on Target 13.3:
Improve education, awareness-raising and human and institutional capacity on climate change mitigation, adaptation, impact reduction and early warning
Target 13.3 has one indicator:
Indicator 13.3.1: Extent to which (i) global citizenship education and (ii) education for sustainable development are mainstreamed in (a) national education policies; (b) curricula; (c) teacher education; and (d) student assessment
This indicator duplicates indicators 4.7.1 and 12.8.1, which you can refer to from their entries earlier in this series.