In Slovenia, the number of educational institutions included in the Eco school program constantly grows. 722 institutions registered as an eco-school in the school year 2018/19. This present 35 % of all schools, including kindergartens in Slovenia. Thus, more than 130,000 children and 8,500 teachers were engaged in the environmental projects as part of the environmental education. Internationally, the eco-school program includes more than 50,000 institutions of which 17,000 already signed for a green flag.