The term SCHOOL BOOK can be broken down into four crossword solutions: PRIMER (6 letters), TEXT (4 letters), READER (6 letters), and SPELLER (7 letters). A PRIMER is a book used to teach basic skills such as reading, writing, and arithmetic. It is usually the first book a student reads in school. A TEXT is a book that contains the main body of information on a particular subject. It is often used in classrooms to provide students with the material they need to learn. A READER is a book that contains stories or other pieces of literature. It is often used to help students develop their reading comprehension skills. Finally, a speller is a book that contains lists of words and their correct spellings. It is used to help students learn how to spell correctly.