What Knox Achieved
研究了诺克斯成就计划（一项最后付费的免费社区大学项目）对学分积累、毕业率和中期劳动力市场结果的影响，发现该项目使学生在高中毕业九年内获得副学士学位的可能性提高了24%。
We examine the effect of a last-dollar “free community college” program on college credit accumulation, college completion, and medium-term labor-market outcomes. Knox Achieves pledged tuition-free community college to any Knox County, Tennessee high school graduate and served as the model for the statewide Tennessee Promise program as well as local and state initiatives across the U.S. We find that Knox Achieves eligibility led to a 24 percent higher likelihood of attaining an associate’s degree within nine years of high school, alongside positive but insignificant changes in the likelihood of attaining a bachelor’s degree, and negative but insignificant changes in in-state earnings.