Research and Validity

Quantitative and qualitative research supporting Prentice Hall Science programs

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.

Longitudinal Study Plans in Progress (PDF)