1. ACT 2012 The condition of college & career readiness (National Report) http://act.org/research-policy/college-career-readiness-report-2012/
2. Synthesis of research on mastery learning;Anderson;Information Analyses,1994
3. Arizona Department of Education 2013 Arizona's college and career ready standards http://www.azed.gov/azccrs/files/2013/10/azccrs_math_generaloverview_10072013.pdf
4. Addressing the needs of underprepared students in higher education: does college remediation work?;Bettinger;Journal of Human Resources,2009