FARMINGTON HILLS, Mich., Oct. 18, 2006–Thomson Gale, part of the Thomson Corporation (NYSE: TOC; TSX: TOC), is pleased to announce the addition of Lexile® measures to its periodical content. As the most widely adopted reading measure in use today, Lexiles provide a common scale for matching reader ability and text difficulty, allowing easy monitoring of student progress and ensuring reading comprehension.

“We have watched momentum for the use of Lexiles grow rapidly as more states and school districts provide students with Lexile measures from classroom and state assessments, and leading publishers, such as Thomson Gale, add Lexiles to their content,” said Malbert Smith III, Ph.D., president of MetaMetrics Inc., developer of The Lexile Framework® for Reading. “By enhancing its databases with Lexile measures, Thomson Gale is offering its education customers a powerful tool for linking assessment to instruction and improving student achievement.”

“Our district is embracing Lexiles,” said Kay McBride, coordinator of Library Services for Pasadena ISD in Pasadena, Texas. “If our schools are going to have differentiated learning, we need to have a tool, such as Lexiles, that encourages students to reach higher and higher reading levels.”

Thomson Gale databases that currently have Lexile measures include Student Resource Center and Opposing Viewpoints Resource Center. Student Resource Center offers easy access to award-winning content based on national curriculum standards, including a premium selection of original reference, overviews, critical essays, a massive archive of primary source documents, and periodicals and full text from newspapers that are updated daily.

Opposing Viewpoints Resource Center draws on the acclaimed social issues series published by Greenhaven Press®, as well as core reference content from other Thomson Gale™ and Macmillan Reference USA™ sources, to form this dynamic online library of current event topics–the facts as well as the arguments of each topic’s proponents and detractors.

“Thomson Gale is very concerned with providing students with the appropriate level of content,” said Andrea Kudzia, manager of Thomson Learning’s Content Analysis and Management team. “We invested heavily to ensure the integrity of our Lexile scoring process is correct. After collaborating with MetaMetrics to score our content correctly, we are planning to provide Lexiles for other Thomson Gale databases, such as InfoTrac and Thomson Gale PowerSearch, with the expectation that more than 9 million articles will be scored by early 2007.”

Lexiles are part of reading and testing programs at the district, state and federal levels. More than 20 million students received a Lexile measure during the 2005-2006 school year. For more information, visit www.Lexile.com.

About The Thomson Corporation and Thomson Gale

The Thomson Corporation (www.thomson.com ), with 2005 revenues of approximately $8.40 billion, is a global leader in providing integrated information solutions to business and professional customers. Thomson provides value-added information, software tools and applications to more than 20 million users in the fields of law, tax, accounting, financial services, higher education, reference information, corporate e-learning and assessment, scientific research and healthcare. With operational headquarters in Stamford, Conn., Thomson has approximately 40,500 employees and provides services in approximately 130 countries. The Corporation’s common shares are listed on the New York and Toronto stock exchanges (NYSE: TOC; TSX: TOC). Thomson Gale™ () serves the world’s information and education needs through its vast and dynamic content pools, which are used by students and consumers in their libraries, schools and on the Internet. It is best known for the accuracy, breadth and convenience of its data, addressing all types of information needs–from homework help to health questions to business profiles–in a variety of formats–books and eBooks, databases and microfilm.

About The Lexile Framework for Reading

MetaMetrics Inc. developed The Lexile Framework for Reading and its companion scale, The Quantile Framework® for Mathematics. The Lexile Framework (www.Lexile.com) provides a common scale for matching reader ability and text difficulty, enabling teachers and parents to choose materials that can help to improve student reading skills and monitor literacy across the curriculum and at home. Recognized as the most widely adopted reading measure in use today, Lexiles are part of reading and testing programs at the district, state and federal levels. More than 100,000 books, 80 million articles and 60,000 Web sites have Lexile measures, and all major standardized tests can report student reading scores in Lexiles. Launched in 2004, Quantiles® (www.Quantiles.com) measure student mathematical achievement and concept/application solvability similar to the way Lexiles measure reading proficiency. The Quantile Framework represents a student’s ability to think mathematically in a taxonomy of math skills, concepts and applications. The Quantile strands-Geometry; Measurement; Numbers and Operations; Algebra/Patterns & Functions; and Data Analysis & Probability-integrate and align with the strands described by the National Council of Teachers of Mathematics (NCTM).

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