Can't we do without school?

In 1760, we begin to take a closer look at the Prussian model school system that is still in use today. 260 years ago, we take a close look at the gains and losses of schools in an education system that was created to cheapen education and educate people.
Is school necessary? Do we need school to learn? In the 21st century, what will people need? Which skills are indispensable for us? What are our priorities?
Tablets
Examination systems
School achievement scores
Unassigned teachers
Closed faculties of education and teacher schools, destroyed school cultures and more...