Though more students are entering college, many drop out, especially those who are low income and/or of color. To address this problem, educational stakeholders have focused on the concept of "college readiness," or the preparation a student needs to succeed in college. However, what it means to be college ready and how to help more students become ready are questions without clear answers. By way of historical and contemporary analyses, this book uses California as a case study to demonstrate how the state has endeavored to make postsecondary opportunity accessible for all students. The contributors also explore the challenges that remain and address what states and schools can do to improve college readiness and completion.