World Book, Inc.

About

World Book, Inc. is a Chicago-based educational reference publisher that has produced encyclopedias and classroom reference works for more than 100 years, serving students in over 65 countries. Its current business is print and digital reference content rather than games: the World Book Encyclopedia (2026 edition currently sold), the Discovery Encyclopedia, subject- and grade-level single books, and subscription digital platforms including World Book Online, World Book Classroom and World Book Kids. The catalog is organized by grade band (Pre-K through 9+) and by subject, with dedicated series…