Paul Battaglia has been a classroom teacher for nearly 25 years. He has extensive experience with all levels of high school mathematics, most notably, his work with AP Calculus AB and BC. Paul is a co-author on numerous titles with Ron Larson, including Calculus for AP, Precalculus with Limits, and Precalculus with Limits: A Graphing Approach. Additionally, Paul has spoken at numerous local and national conferences and worked with schools across the country. His current research interests include rigor and relevance in mathematics as well as standards-based grading. Paul is married to Janice and has four children.