Final answer:
Sociometric status is the best example of the role peers play as an agent of socialization for school-aged children.
Step-by-step explanation:
The best example of the role peers play as an agent of socialization for school-aged children is sociometric status. Sociometric status refers to the social standing or popularity of a child within their peer group. When a child is avoided by other children because he or she is aggressive, it indicates a low sociometric status.