What had ranofer learned to do which was very unusual for boys of his time in the golden goblet?

In "The Golden Goblet" by Eloise Jarvis McGraw, Ranofer had learned to read and write. This was very unusual for boys of his time, as education was typically reserved for the upper classes and the priesthood in ancient Egyptian society. Ranofer's ability to read and write sets him apart from his peers and becomes a valuable skill in his journey and interactions throughout the story.