We invest in education to teach our children to become independent individuals and productive members of society. Schooling is compulsory for all children in the United States, but the age range for which school attendance is required varies from state to state, and can generally be satisfied by educating children in public schools, state-certified private schools, or an approved home school program. Once upon a time in this country our parents taught us values, manners, and basic interpersonal skills at home and sent us to schools to acquire basic marketable skills necessary to become functioning adults.