Final answer:
Education in ancient Sumerian society was a privilege mainly accessible to males of the upper class, and female education was focused on domestic skills. Therefore, the notion that all upper-class Sumerians received an education is false.
Step-by-step explanation:
The statement that all upper-class Sumerians received an education may imply a broad involvement in educational practices; however, it is not entirely accurate to say that all individuals in this class received an education. In ancient Sumerian society, education was indeed a sign of privilege, primarily available to males of the upper class who were being prepared for roles in administration, the priesthood, and other positions of authority. While prominent members of Sumerian society, including nobles and professionals, had access to education, this access was not universally granted to every individual within the upper class.
Additionally, the education for females, particularly in upper-class Sumerian society, focused largely on domestic skills and religious duties rather than the broader scholarly pursuits available to their male counterparts. Therefore, the statement about all upper-class Sumerians receiving an education is false.