One of the key claims of choice advocates is that it will take diverse schooling options to engage all children in learning. In a school system truly open to new providers of instruction and diverse schooling options, private schools and public schools of choice can vie for customers by trying different subject themes and pedagogies. If a school's products are inferior, poorly targeted, or if its procedures or themes are considered objectionable, parents are free to put their children elsewhere. The program described in this paper, "Core Knowledge," has seen considerable success, but since it may not be everyone's cup of tea, it may be politically challenging to implement it in schools filled through assignment. But, for the same reason, opportunities to offer it selectively through schools of choice may cause much more widespread use of the Core Knowledge curriculum. So, the immediate "news" events are the decisions to use the Core Knowledge curriculum in many New York City schools, and the "news" that will gradually unfold will be the size of the various thematic and pedagogical niches that evolve in New York and elsewhere. (Contains 19 notes.)