Countries
Thirty-five countries from around the world participated in PIRLS 2001, and forty-one countries participated in PIRLS 2006. These countries include:
| Countries |
| Morocco |
X |
X |
| South Africa |
|
X |
| Chinese Taipei |
|
X |
| Hong Kong (SAR) |
X |
X |
| Indonesia |
|
X |
| Iran |
X |
X |
| Israel |
X |
X |
| Kuwait |
X |
X |
| Qatar |
|
X |
| Singapore |
X |
X |
| Turkey |
X |
|
| Austria |
|
X |
| Belgium (Flemish) |
|
X |
| Belgium (French) |
|
X |
| Bulgaria |
X |
X |
| Cyprus |
X |
|
| Czech Republic |
X |
|
| Denmark |
|
X |
| England |
X |
X |
| France |
X |
X |
| Georgia |
|
X |
| Germany |
X |
X |
| Greece |
X |
|
| Hungary |
X |
X |
| Iceland |
X |
X |
| Italy |
X |
X |
| Latvia |
X |
X |
| Lithuania |
X |
X |
| Luxembourg |
|
X |
| Macedonia, Republic of |
X |
X |
| Moldova |
X |
X |
| Netherlands |
X |
X |
| Norway |
X |
X |
| Poland |
|
X |
| Romania |
X |
X |
| Russian Federation |
X |
X |
| Scotland |
X |
X |
| Slovak Republic |
X |
X |
| Slovenia |
X |
X |
| Spain |
|
X |
| Sweden |
X |
X |
| Belize |
X |
|
| Canada |
X |
X |
| Trinidad and Tobago |
|
X |
| United States |
X |
X |
| Argentina |
X |
|
| Colombia |
X |
|
| New Zealand |
X |
X |
X = collected data
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