Why could Egyptians graduating from high school afford to wear clean white robes without blisters on their hands?

In Ancient Egypt, few children could finish school. If someone succeeded, then a new life was opened for him. Educated people were then very revered, because they were in short supply. They had no corn, because they did not need to plow in the field. Egyptians who graduated from high school could find themselves more prestigious and highly paid jobs. They could afford clean white clothes because they made a lot of money and did not have to fear that they would die in poverty. Education at the time was the key to a luxurious life.