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 37 countries participating in the EU's Erasmus+ programme (27 Member States, Albania, Bosnia and Herzegovina, Switzerland, Iceland, Liechtenstein, Montenegro, North Macedonia, Norway, Serbia and Turkey). The reference year is 2021/22. [For the 2020/21 report, see ED610828.]