Printing Errors Invalidate U.S. Reading Scores on PISA.

The article focuses on the issue of errors that were printed in the Program for International Student Assessment (PISA) standardized test. It explains that due to the errors, the reading scores from the test have been discounted. Mark S. Schneider, the commissioner of the National Center for Education Statistics, comments on the incident. The PISA test is described and the errors contained in the mathematics and science portions of the exam are also discussed.