[1] Influential voices within the movement included Paul Goodman, Edgar Z. Friedenberg, Herb Kohl, Jonathan Kozol, and James Herndon, with titles such as A. S. Neill's 1960 Summerhill, George Dennison's 1969 The Lives of Children, and Jonathan Kozol's 1972 Free Schools.
[2] The movement did not subscribe to a single ideology, but its "free schools" tended to fall into the binaries of either utopian cultural withdrawal from external concerns, or built on the legacy of freedom schools with direct political address of social injustices.
[4] The Huffington Post wrote in 2012 that "the movement is revving up again", citing Education Revolution's listing of over 100 free schools in America.
Author Ron Miller credits the rise of standardization with grassroots interest in alternative schools.
"[8] Ravitch believed that the free schools' values would conflict with predominant student testing trends.