UNESCO prepared a report on how countries are integrating climate change issues in education: “Getting every school climate ready”. The pdf document is available here.
New UNESCO data from 100 countries (not including Slovenia) shows that only half the education sector plans or national curriculum documents make any reference to climate change. When climate change was mentioned, the focus on it was almost always very low.
Furthermore, fewer than 40 percent of teachers surveyed by UNESCO and Education International were confident in teaching about the severity of climate change, and only about one-third felt able to explain well the effects of climate change on their region or locality.