[1] Jules began her career as an author with the publication of The Grey Striped Shirt, a story about the granddaughter of Holocaust survivors, published in 1995.

Unite or Die: How Thirteen States Became a Nation began as a skit she wrote for her students to perform on Constitution Day.

[10] With Zapato Power: Freddie Ramos Takes Off, Jules created a chapter book series about a boy who can outrun trains with his super-powered purple sneakers.

The idea for this series was sparked by young students who repeatedly asked for a book about a "superhero" on an early elementary age reading level.

[11][12] Jules's poetry has appeared in numerous publications, including Christian Science Monitor, St. Anthony Messenger, Cicada, Cricket.