1. How effective is schooling?;Averch;Rand Corporation Publication No. R-956-PCSFIRS,1972
2. Equality of educational opportunity;Coleman,1966
3. Teacher characteristics and gains in student achievement: Estimation using micro data;Hanushek;American Economic Review, Papers and proceedings,1971
4. Education and race;Hanushek,1972
5. Equality of educational opportunity: The basic findings reconsidered;Smith,1972