Her work ranges from picture books to young adult novels and includes both fiction and nonfiction.
She attended William Allen High School (from which she later received a Distinguished Alumni Award),[citation needed] and graduated from Brown University.
Heiligman started her writing career working for Scholastic News Explorer, the 4th grade classroom magazine.
In addition to her books for children and teens, she has written articles for major publications including The New York Times and The Philadelphia Inquirer and for numerous magazines including Ladies' Home Journal, Sesame Street Parents Guide and Parents Magazine.
[6] In 2014 Heiligman lives in New York City with her husband, Pulitzer Prize winning author Jonathan Weiner, who is a professor at Columbia University School of Journalism.