The most popular field trip is "Storytelling & Bookmaking," in which classes collaborate to write stories for Mr. Barnacle, the never-seen, always-cranky publisher behind Barnacle & Barnacle Books. With the help of several storytellers, an illustrator, and a typist, a class works together to create characters, a setting, and a plot for an original story. (A recent book chronicled the friendship between an injured mouse and a sandwich-making robot policeman. Others have featured time traveling tea-cup pigs, spaghetti monsters, and sentient planets). The action builds to a thrilling cliffhanger, and then each student has an opportunity to write an ending, create an illustration, bind his or her book, and walk away with the finished product. Barnacle is notoriously hard to please, but the students’ work manages to earn his enthusiastic approval every time.