The site offers three different levels to help students explore.
World Book Kids is a general website developed especially for younger students. The site features simple navigation, easy-to-read articles, thousands of illustrations, videos, comparison tools, and a wealth of engaging games and activities.
World Book Student is tailored for students in elementary and middle schools, and includes all the articles from the print versions of the World Book Encyclopedia, plus thousands of additional articles, learning resources, and research tools.
World Book Advanced is a powerful reference tool that includes encyclopedia, multimedia, e-book, and primary source databases, fully integrated in a single search. This portion is tailored for the needs and skills of students in grades 8 and up.