The statistics contain annual data on the number of school classes in Austria. The allocation of a class to a school type or to a school level is based on the predominant number of pupils. Class sections, such as integration pupils with a special school curriculum in a primary school class, are not shown as a separate class. The regional presentation of the results is generally carried out at the federal province level; data can be presented down to the municipal level.
The legal basis is the Federal Act on Documentation in Education (Bildungsdokumentationsgesetz 2020) and the ordinances of the ministries responsible for the particular types of schools.