Frequently Asked Questions

• What is PIRLS?
• What questions can PIRLS answer?
• What aspects of reading literacy are assessed in PIRLS?
• What are the components of PIRLS?
• What is the data collection schedule?
• What is the sample design?
• Which countries are participating?
• How was PIRLS constructed and administered?
• How does PIRLS compare to the NAEP fourth-grade reading assessment?
• Where can I get a copy of the PIRLS U.S. Report?
• When will PIRLS be administered again?

Which countries are participating?

Thirty-five countries participated in PIRLS 2001, and more than forty countries are expected to participate in PIRLS 2006. For a list of participating countries, please go to the PIRLS Countries page.

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