This report, based on national data, gives an overview on the length of the school year, the start and the end dates, the timing and length of school holidays and the number of school days. It covers both primary and general secondary education and key points are illustrated by comparative figures. The information is available for the 38 countries participating in the EU's Erasmus+ programme (27 Member States, the United Kingdom, Albania, Bosnia and Herzegovina, Switzerland, Iceland, Liechtenstein, Montenegro, North Macedonia, Serbia and Turkey). The reference year is 2020/21. [For the 2019/20 report, see ED610827.]