„A precondition for teaching is to be able to manage a classroom. TALIS 2018 results show that while 72 % of the teachers report that they receive classroom management preparation in their initial training, only 53 % feel well prepared in this field, and only half of the teachers had recent professional development in this area.“
Univ.-Prof. Dr. Fernando Reimers, Audacious Education Purposes (2020), S. 18.