Heckman, J.Russell Sage Foundation : 47 ~ 83[2000]
Quality counts 2007: From cradle to career : Connecting American education from birth to adulthood(January 4, 2007)
Education Week / Editorial Projects in Education
Potholes on the road to college : high school effects in shaping urban students’ participation in college application, four-year college enrollment, and college match
Roderick, M.Sociology of Education 84 (3) : 178 ~ 211[2011]
Mathematics, foreign language, and science coursetaking and the NELS:88 Transcript data