Fact
In 2008, 48.8% of people for whom their high school diploma was their highest level of educational attainment who have ever smoked reported that they had successfully quit.
Source 1:
"Cigarette Smoking Among Adults and Trends in Smoking Cessation --- United States, 2008." CDC. Atlanta, GA. 58(44). 13 Nov. 2009: 1227-1232. Web.