Mr. Richard and Dr. Leslie A. Isaacs of Wallingford, along with Dr. Alan and Mrs. Debra Krochtengel of Maple Glen, announce the engagement of their children, Jessica Lauren Isaacs and Zachary Phillip Krochtengel.

    Jessica graduated summa cum laude from Widener University with a Bachelor of Science degree in mechanical engineering. She also earned a Master of Science degree in mechanical engineering and biomechanics from Drexel University. Jessica is currently pursuing a doctorate from Drexel University and preparing to defend her thesis on spine biomechanics this winter.

    Zachary graduated from Syracuse University with a Bachelor of Architecture degree. He also holds a Juris Doctor degree from Villanova Law School. Zachary is currently attending the University of Edinburgh, where he will earn a master's degree in carbon finance.

    Sharing in the couple's happiness are Jessica's brother and sister, Daniel and Alison.

    Jessica is the granddaughter of Barbara Isaacs and the late Dr. Peter Isaacs of Reston, Va.; and Milton Anger and the late Helène Anger of Brooklyn, N.Y., and Delray Beach, Fla. Zachary is the grandson of Ann Feinberg and the late Zeke Feinberg of Ambler; and Sylvia Gross of Syracuse and the late Marvin Krochtengel of Brooklyn.

    The couple is planning a September 2012 wedding.