Prentice Hall Research Overview
Find out more about Prentice Hall's approach to the foundational and efficacy research that supports our quality programs.
National Effect-Size Study (PDF)
Get the highlights of the national, independent research study that evaluates the long-term effects of Prentice Hall Biology users as compared to other Biology programs.
Readability Results (PDF)
Access the readability results of the Prentice Hall Biology ©2004.