E.D. Hirsch is an American educator, literary critic, and author, best known for his work in the field of education and literacy. He founded the Core Knowledge Foundation and developed the Core Knowledge Curriculum, which emphasizes the importance of a shared body of knowledge in education. Hirsch believes that a strong foundation in knowledge is essential for reading comprehension and critical thinking. Hirsch gained prominence with his book, Cultural Literacy: What Every American Needs to Know, published in 1987. In it, he argues that cultural literacy is crucial for effective communication and understanding in society. His ideas have influenced educational policy and curriculum development across the United States.