„In 2022, 33 % of students in Austria were in schools whose principal reported that the school’s capacity to provide instruction is hindered by a lack of teaching staff (and 18 %, by inadequate or poorly qualified teaching staff). In 2018, the corresponding proportions were 12% and 9%.“
OECD (Hrsg.), PISA 2022, Country Note Austria (2023), S. 8.