Elizabeth (Beth) Allegretti attended the University of Illinois at Urbana-Champaign, earning a Bachelor of Science degree in Elementary Education in 1983, and Northeastern Illinois University where she earned a Master of Arts in Mathematics for Elementary School Teachers in 1985. In June of 2016, Ms. Allegretti retired from teaching for the Chicago Public Schools for over 33 years, most recently teaching fifth and sixth grade at Decatur Classical School. Throughout her career, she has funneled her competitive nature into coaching students in preparation for several local, state and national competitions. These programs included National History Day, MathCounts, Illinois Junior Academy of Science, Stock Market Game, Project Citizen and the Invention Convention. In 2010, Beth was the co-recipient of the Edward J. Lewis II Illinois Law-Related Education Elementary Teacher of the Year. She credits this award to the Decatur Classical Class of 2010 and their outstanding and inspirational efforts to establish a memorial for American Airlines Flight 191, located in Lake Park, Des Plaines, Illinois.

Impressed by the energetic and inquisitive students at the Adventures with Mr. Math, Beth was excited to join this innovative program in 2016. She recently moved to her forever home in Fort Myers, Florida and lives with her husband, son and wonderful boxer, Laila. In her free time she enjoys exploring the beautiful beaches, state parks and nature preserves of Southwest Florida. She is an avid reader, runs, swims, bikes, kayaks and practices yoga.