The educators I know in Memphis have all been watching this with anticipation, and without exception that all said that the return to phonics was a massive part of the turnaround.
As many here know, my wife and I (mainly she) home-educated our kids. We saw the changes in curriculum that were making the rounds 25 years ago and felt they would be detrimental, so despite neither of us having a background in education, we dove in headfirst. All of our kiddos have done exceptionally well in college and we attribute that to the fact that we poured ourselves into their education AND we stuck with the tried and true methods of learning that have served us for decades.
In fact, my wife has taught a bunch of friends kids / grandkids to read that were struggling with the methods the schools in TN still use. She just uses phonics and the kids take to it like a fish to water.