Many schools are not crazy about Saxon because it takes a very methodical approach, utilizes repetition in problem solving to drive home concepts, and is very practical in its orientation.
Many teachers dislike this, for the same reason they dislike phonics. On the other hand, those who need to teach themselves are wildly successful with this approach.
There are no fancy pictures, stories about rainforests, or other politically correct nonsense in the books.
We have all of the books thru Advanced Math.
I am very math-illiterate.
Phonics--I love phonics.
I'll bet you some homeschool moms could make a nice income tutoring kids who struggle with reading. I taught my kids using phonics and then allowed them to read out of the readers they were most interested in. All of my kids enjoyed the Pathway Readers and they actually read them over and over.
Where I tutor, we all hate Saxon. (I homeschooled, used Straight Forward Math). The kids end up so confused. It seems to be circular, so a smattering of every sort of thing in any given chapter. I scanned through the 67 book quickly, to help a student, and found it confusing too.
But many love it.