Maria Litvin has taught computer science and mathematics at Phillips Academy in Andover, Massachusetts, since 1987. She is a mentor of Phillips Academy’s Technovation Challenge girls' teams, the faculty advisor of the Computer Science Club that she founded 20 years ago, and the founder and advisor of the Coding Circle community engagement program at the Boys & Girls Club of Lawrence, Massachusetts, where she brings her high school students to teach coding to elementary school kids. As a Code.org facilitator since 2014, Maria has trained over four hundred New England elementary school teachers in introducing computer science to children in grades K-5. Since 2016, Maria's students have won seven AiC awards. Maria has been a reader and question leader for the Advanced Placement Computer Science A exam since 1996. As a consultant for The College Board, she has trained hundreds of high school computer science teachers. Prior to joining Phillips Academy, Maria taught computer science at Boston University. She is the co-author of several leading AP Computer Science textbooks, including Coding in Python and Elements of Discrete Mathematics, Java Methods: Object-Oriented Programming and Data Structures, Be Prepared for the AP Computer Science Exam in Java, and C++ for You++.