If the district only started teaching to CC standards in '13-'14 I doubt there will be much online info. You can look up and compare standardized test scores in individual schools or districts if they are available, but it may be too early for that. And likely what you'll find, if they are published, is that testing scores have fallen since the last year. That's been the experience in NY and Kentucky, as I suspect it will be in all but the highest-performing schools. (To me, it's like getting a new piece of software at work. Productivity goes down to start with and then turns up as people get used to using it.)
I'd also look into the local newspapers online for the town to see what info I could find. Are parents there upset or not? Any interviews with teachers or administrators in the district about CC? Many community papers are now online and you might get a good sense of how the CC standards are playing out in local schools from them. (The NYT story I posted in another thread about a nine-year-old Brooklyn boy's experience with CC standards is as good a read as I've seen anywhere about exactly what kids and teachers go through with this:
//www.city-data.com/forum/educa...lly-works.html)
Threre are tons of blogs and stories about CC on the national and even state levels, but further granularity will be harder to find short of in-person discussions with other parents, teachers, and the like. But your child is only three. You have time to investigate, and more importantly, the kid will grow up with CC rather than having to switch horses in the middle of the stream, so to speak, like kids already in school have to do. That will make a big difference.