Create, share, and read books at StoryJumper.
For another option to digitally publish student work, check out StoryJumper. The site is free for creating, sharing, and reading, there is only a price if you want to print out the story or if you want to order a physical copy of the book.
Students can either use on of the pre-populated story starters, or write in a blank book.
In the story, you can add text and props in the form of backgrounds and clipart. This looks like a pretty cool site for creating ebooks!