Who were the graduates of the school in Ancient Egypt?

Who were the graduates of the school in Ancient Egypt? Where could the ability to multiply, add, subtract and divide be useful to them on a daily basis?

At the beginning of the training, children were trained at home, they were taught by their parents. After that they were educated at a general school, where they studied subjects such as astronomy, geometry, calligraphy. After that, the stage of education began, at which children chose a profession and studied it for further work. As a rule, children inherited the occupation from their fathers and grandfathers. For activities as artisans, merchants, the acquired knowledge and skills came in handy. The children of ordinary people were trained until the moment when the need to work in the field came (up to 10 years old).