School registers give an overview of students who attended a school. One book usually covers several years. The information in the oldest registers is very brief: we can only learn the name, surname, and the place-of-origin. Newer registers give much more information like place & date of birth, home address, full name & occupation of parents, religion, native language, date of the entrance and the release from the school. Sometimes information about missed days and final grades are included. The information differs from school to school.