This report gives an overview on the start of the school year and its length as well as the timing and length of school holidays. It covers both primary and general secondary education. The information is available for the 37 countries participating in the EU's Erasmus+ programme (27 EU Member States, Albania, Bosnia and Herzegovina, Switzerland, Iceland, Liechtenstein, Montenegro, North Macedonia, Norway, Serbia and Türkiye). The reference year is 2022/2023. [For the 2021/22 report, see ED617612.]