We use Creative Curriculum at the school where I teach, and I really like it. It's a very loose "curriculum", with a strong emphasis on children learning through their own choices in classroom centers such as dramatic play, cooking, housekeeping etc . . . I'm a strong believer in choice and play being at the heart of the preschool curriculum, but I think that one of the real weaknesses of that is that teachers don't always have a good sense of what they're teaching, or what outcomes they want, which can mean that they aren't as intentional as they might be. Creative Curriculum addresses that with a series of 50 objectives, that cover most of the major elements of early childhood from retelling picture books, to following routines, to using numbers to solve problems, to sticking with tasks of the child's choosing over the course of several days.