👉 Glencoe is a well-known American educational publishing company that specializes in middle-grade, young adult, and high school textbooks. The company was founded by William C. Glencoe Jr. and Donald W. Glencoe Sr., who combined their backgrounds in education to create the company in 1908. Glencoe's books are known for their engaging content, detailed explanations, and high-quality design, making them popular among students and educators alike.
