I am currently tutoring my 7th grade grandson in Common Core Pre-Algebra. Here’s what I know:
1. It’s not about just algebra. It is a mix of arithmetic, algebra, trigonometry and geometry. All mixed up with no obvious sequence that I can detect.
2. The teachers hate it. The contribution of the teacher to the learning process is certainly diminished.
3. The students are confused. Problems range from silly simple to complex and difficult. Half way through the first year there has been very little actual algebra coursework. Some topics are just pounded into the ground. Some are a day or two and on to the next subject. Rhyme and Reason seem to have taken a back seat.
4. Obama must love it. Test scores will decline. Students achievement in life will decline. The Know-Nothing Dem Count will increase.
I don't know a lot about CC but from what I've read I suspected what you said is true. The entire curriculum comes from the Feds and the teachers are/will be nothing more than "facilitators".
I've read that the countries with the best math scores and brightest math students combine the math in this manner, integrated math, but they probably do so in a way that makes some sense.