Pearson Public Limited Company, founded in 1844 and based in London, publishes textbooks, reference works, literature, and interactive digital content for the education, business, government, and general consumer markets. The company includes the Pearson Education, Financial Times Group, and The Penguin Group units. The Pearson Education publishing business encompasses the Pearson Scott Foresman, Pearson Addison Wesley, and Pearson Prentice Hall imprints. Pearson's Penguin Group includes the Penguin, Putnam, Viking, Rough Guide, Puffin, Dorling Kindersley, and Penguin Australia imprints. The firm offers K-12 schools testing and educational software. It introduced its Reading Street elementary reading curriculum in 2005. The MyMath Lab and Math XL online resources are targeted to college students. Content supports printed textbook material. The company's Financial Times unit provides financial institutions with data. Pearson publishes 'The Financial Times,' along with other business newspapers and magazines. It holds a 50 percent share in 'The Economist.' It holds a majority share of financial information firm Interactive Data Corporation and Japanese educational publisher Kirihara. The unit has formed the FTSE joint venture with the London Stock Exchange. The index tracks the social responsibility of companies. Licensing revenues from the FTSE4Good indices are contributed to UNICEF. Pearson also provides government agencies with public information systems. The company acquired National Computer Systems (NCS) in 2000 and WRC Media's AGS Publishing business in 2005. Pearson serves customers worldwide. It maintains offices in 60 countries. Pearson is listed on the London Stock Exchange under the PSON symbol and on the New