A new UNESCO report shows that the shortage of teachers is a problem not only in Germany, but worldwide. New data suggests that 44 million additional teachers will be needed to achieve universal primary and secondary education for all children by 2030. This is one of the demands of Goal 4 "Quality Education" of the 17 Sustainable Development Goals of the United Nations. From an international perspective, the UNESCO report provides answers to questions such as: "Where is the teacher shortage greatest?", "Why is there so much teacher shortage worldwide?" or "How can the teacher shortage be solved?"