One more thing on CC. I live in a PARCC state, so the curriculum needs to align with the PARCC questions, which require the weird methodology and wordy trick questions. The math level is so low, I would have to advance my young son three years ahead to learn something new. My state has so many prescriptive requirements, it's impossible to complete the required curriculum and supplement beyond. The children don't even do speed drills. I have lobbied the legislature and districts, a lot. The common defense of CC by our legislators is that it ends tracking and closes the achievement gap. The schools are rated by how well they close the achievement gap, so they are motivated to keep bright students down.