Unschooling is an educational method and philosophy that advocates learner-chosen activities as a primary means for learning. Unschooling students learn through their natural life experiences including play, household responsibilities, personal interests and curiosity, internships and work experience, travel, books, elective classes, family, mentors, and social interaction. Unschooling encourages exploration of activities initiated by the children themselves, believing that the more personal learning is, the more meaningful, well-understood and therefore useful it is to the child. While courses may occasionally be taken, unschooling questions the usefulness of standard curricula, conventional grading methods, and other features of traditional schooling in maximizing the education of each unique child.The term "unschooling" was coined in the 1970s and used by educator John Holt, widely regarded as the "father" of unschooling. While often considered a subset of homeschooling, unschoolers may be as philosophically separate from other homeschoolers as they are from advocates of conventional schooling. While homeschooling has been subject to widespread public debate, little media attention has been given to unschooling in particular. Critics of unschooling see it as an extreme educational philosophy, with concerns that unschooled children will lack the social skills, structure, and motivation of their peers, while proponents of unschooling say exactly the opposite is true: self-directed education in a natural environment better equips a child to handle the "real world."