Correlation coefficients between student mathematics score and various measures of student social class, for U.S. and select comparison countries, provinces, and states, TIMSS 2007

 Country or province Sample size A Books in the home (BH) BH + mother’s education BH + mother’s education + articles in home Sample size B Books in the home BH + highest parental education BH + highest parental education + articles in home
British Columbia, Canada 4,053 0.28 0.28 0.34 4,072 0.28 0.31 0.36
Ontario, Canada 3,320 0.32 0.32 0.35 3,339 0.32 0.37 0.39
Quebec, Canada 3,826 0.31 0.32 0.34 3,839 0.31 0.33 0.35
Korea 4,219 0.41 0.41 0.45 4,221 0.41 0.46 0.49
U.S. 7,158 0.41 0.41 0.44 7,219 0.41 0.43 0.45
Massachuestts 1,857 0.46 0.46 0.48 1,860 0.46 0.47 0.49
Minnesota 1,745 0.34 0.35 0.39 1,745 0.34 0.39 0.42

Notes: Sample size A = sample size when including books in the home, mother's education, and articles in the home. Both BH and BH+ME. Sample size B = sample size when including books in the home, highest parental education, and articles in the home. Correlations shown for sample size A all use the same observations in sample A; correlations shown for sample size B all use the same observations in sample B.

Source: Authors' analysis of Trends in International Mathematics and Science Study (TIMSS) 2007 database (Boston College International Study Center) for each country, province, or state

View the underlying data on epi.org.