Mia plays alone at recess. the school counselor teaches mia how to introduce herself and how to join in with peers. the school counselor is trying to increase mia's

The answer is Social knowledge. The combined body of information created by your public or social circle is what is well-known as social knowledge. In a social or cultural setting, social knowledge can be the collective knowledge base of small groups, like a family, or it can be a massive and constantly evolving body of acquaintance.