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Horace Mann became an advocate for common school which we know as Elementary School. He is also known as "the father of public school"
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There was a gap from elementary school to college. So private schools were established. But the other people wanted it too. So then came a court case to be able to charge tax to provide secondary schools for all.
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John created progressive education.
https://www.iep.utm.edu/dewey/ -
National Defense Education Act provides funding to all education levels. https://www.britannica.com/topic/National-Defense-Education-Act
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This is more present and where we are today with state testing to make sure children are learning. https://www.edweek.org/ew/section/multimedia/no-child-left-behind-overview-definition-summary.html