This online book provides an account of a symposium dedicated to teacher preparedness and credentialing. Chapters in the book include discussions of the need for scientifically literate teachers and reform in state policy, implications of the standards for teacher preparation and certification, a discussion of standards, several discussions of state preparation programs, reflections on pre-science education, a discussion from the science educator's perspective, and the principal's and state's perspectives of teacher preparedness and credentials. The book is available to read online for free. It is also available to download and purchase for a fee.