Regarding using Core Plus Mathematics in New York State, yes it is somewhat difficult right now, but there is a second edition in which beginning work with proofs and factoring occur in the first course, complex numbers are introduced in the third course, and other topics also occur earlier. We have been using Core Plus for 10 years (and the second edition for 5 years) in New York State with exellent results. However, I think that we in New York need to focus on the coming implementation of the Common Core Standards not the current Regents exams. For example, reciprocal trig functions may not even be included in the first three years under Common Core. Also other topics under Common Core will probably align nicely. For example, Right Triangle Trig, Law of Sines, and Law of Cosines will probably fall in the Geometry course under Common Core which is convenient for Core Plus users because this content is in Course 2 of the second edition of Core Plus. There is no doubt that Core Plus Mathematics is the best program available that meets both the content needs of the Common Core and the standards for Mathematical Practice in the Common Core. Developing the Mathematical Practices will be especially important under Common Core because students are much more likely to be presented with unrehearsed problems on Common Core assessments.