The United Nations Educational, Scientific and Cultural Organization (UNESCO) has reported 617 million children and adolescents in the world who can not read and count.

This came on the occasion of World Education Day, which falls on January 24 each year.

"The level of education for parents is still a critical factor in achieving university qualification," said Maria Böhmer, president of the German Commission for UNESCO.

"We must intensify the work to serve the educational opportunities available to families away from education, as well as to migrant women and migrants increasingly," she said.

The UNESCO Global Report on Education in 2019 showed that teachers, in particular, were a key focus of the educational process.

Due to the retirement of many teachers, only an additional 6,800 teachers will be needed in Germany annually until 2030, Böhmer said.

She noted that if increased numbers of students are calculated, the need for teachers by 2020 will increase by more than 1,300 teachers and about 3,800 teachers per year for the primary education sector until 2025.

"We are already lacking trained teachers, and the shortage is increasing every year," Boomer said.