The Saunders NCLEX PN review book is a popular study guide for students preparing to take the NCLEX PN exam. It covers all the essential content areas and includes practice questions and exams to help students assess their knowledge and prepare for the exam. The book also includes tips and strategies for test-taking and provides detailed explanations for each question to help students understand the reasoning behind the correct answers. Overall, the Saunders NCLEX PN review book is a comprehensive and effective resource for students looking to pass the NCLEX PN exam.