Simplify the following text for a Grade 13 native English-speaking person.
Original: Member organizations include Atheist Alliance International , the Institute for Humanist Studies , the Secular Student Alliance , the Secular Web , American Humanist Association , Society for Humanistic Judaism , the Freedom From Religion Foundation , the Military Association of Atheists and Freethinkers , the American Ethical Union , Camp Quest and American Atheists .
Simplified: The Society for Humanistic Judaism and the Freedom From Religion Foundation joined the Coalition in January 2006 , the Military Association of Atheists and Freethinkers in February 2007 , and the American Ethical Union in April 2008 . In 2009 , Camp Quest joined in January and American Atheists became a member in June .