Answer:
Cultural beliefs.
Step-by-step explanation:
As the exercise explains, the set of beliefs and ideas that presents adolescense as a premier time for cultures to educate youth about their set of beliefs and ideas that are the foundation for norms and standards of behavior is called "Cultural beliefs". This explains how and why is it important for adolescents to be educated, making the school system a pilar of society in many sociological theories that think the school as the primary step of an individual's life in society, molding them to continue the social model.