Changes in PISA sample social class composition by books in the home, U.S. and six comparison countries, 2000–2009 (percentage points)
| Canada | Finland | Korea | France | Germany | U.K. | U.S. | |
|---|---|---|---|---|---|---|---|
| 0–10 books | +2 | -2 | -3 | +3 | +4 | +5 | +7 |
| 11–100 books | +6 | -4 | -1 | +3 | 0 | +3 | +5 |
| 101–500 books | -5 | +6 | +2 | -5 | -2 | -3 | -7 |
| >500 books | -4 | 0 | +2 | -1 | -2 | -5 | -4 |
Source: Authors' analysis of OECD Program for International Student Assessment (PISA) 2000 and 2009 databases for each country