Maria Litvin has taught computer science and mathematics at Phillips Academy in Andover, Massachusetts, since 1987. She is an Advanced Placement Computer Science exam reader and Table Leader and, as a consultant for The College Board, provides AP training for high school computer science teachers. Prior to joining Phillips Academy, Maria taught computer science at Boston University. She is coauthor of several leading AP Computer Science textbooks, including C++ for You++ and Java Methods: Object-Oriented Programming and Data Structures. She is also the co-author of Be Prepared for the AP Computer Science Exam in Java (since 1999) and Mathematics for the Digital Age and Programming in Python. Since 2014, as a Code.org facilitator, Maria has trained over three hundred New England elementary school teachers to introduce computer science to students in grades K-5. She is the faculty advisor of the Coding Circle community service program at the neighboring Boys & Girls Club, which introduces coding to elementary school children. Maria is a co-author of the Continental Math League’s computer science contest for elementary and middle school students.