A textbook is a book containing a comprehensive compilation of content in a branch of study with the intention of explaining it. Textbooks are produced to meet the needs of educators, usually at educational institutions. Schoolbooks are textbooks and other books used in schools. Today, many textbooks are published in both print and digital formats.

The New England Primer was the first reading primer designed for the American colonies. It became the most successful educational textbook published in 17th-century colonial United States and it became the foundation of most schooling before the 1790s.