During OECD webinars prof. Andreas Scheicher presented a study  on how education systems responded and what changes in education took place a year after the pandemic. 

OECD study overview and reference: http://www.oecd.org/education/state-of-school-education-one-year-into-COVID.htm

The  record of the presentation will be published and can be viewed at this address : https://oecdedutoday.com/oecd-education-webinar