Homeschooling Goes Mainstream says:

Though parents and tutors have been teaching children in the home for centuries, in the late 1960s and 1970s there emerged for the first time in the United States a political movement that adopted this practice as a radical, countercultural critique of the public education system. Conservatives who felt the public schools had sold out to secularism and progressivism joined with progressives who felt the public schools were bastions of conservative conformity to challenge the notion that all children should attend them. By the early 1990s they had won the right to home school in every state.
…
Journalist Peter Beinart found that Wichita’s 1,500 home-schooling families had created “three bands, a choir, a bowling group, a math club, a 4-H Club, boy- and girl-scout troops, a debate team, a yearly musical, two libraries and a cap-and-gown graduation.” “Home-schooled” children were meeting in warehouses or business centers for classes “in algebra, English, science, swimming, accounting, sewing, public speaking, and Tae Kwan Do.”

Maybe soon colleges will quit requiring GEDs for homeschoolers.