This evaluation report provides a summary of the progress, challenges and achievements of the Economic Commission for Europe (ECE) member States from 2017 to 2019 in implementing the UNECE Strategy for Education for Sustainable Development (ESD). The report reviews the data collected through national implementation reports submitted by member States at the end of the fourth phase of the Strategy's implementation, as well as supplemental information provided by member States to the secretariat through annual informal national reports and reports of ECE Steering Committee on ESD working groups. The findings of this report have been taken into consideration for developing the framework for the implementation of the UNECE Strategy for ESD from 2021 to 2030.