https://responsiblehomeschooling.org/research-old/current-policy/instruction-time-subject-requirements/subject-requirements-comprehensive/ 2014-04-04T12:17:23+00:00 weekly 1.0 https://responsiblehomeschooling.org/research-old/summaries/a-brief-history-of-homeschooling/ 2021-03-23T14:19:09+00:00 weekly 1.0