On a certain level, homeschooling is all about socialization. Whatever the teaching methods used in school or homeschool, it is ultimately the social environment itself that distinguishes homeschooling from conventional school. This social environment includes the nature and quantity of peer interaction; parental proximity; solitude; relationships with adults, siblings, older children, younger children, and the larger community; the ways in which the children are disciplined and by whom; and even the student-teacher ratio and the overall environment where the children spend their time.
Rachel Gathercole The Well-Adjusted Child: The Social Benefits of Homeschooling