I'm 34 years old, and I myself used aBeka from k-5th grade, and did very well, transitioned well into public school--with the exception of a wasted 6th grade year because nothing new was taught. When I became a 1st grade teacher in a Christian school, they used a lot of aBeka, and I thought, hey, this is the exact same books I used! Truly, didn't look like any updates! As a homeschooling mom, I use the phonics (letters & sounds and Language books as well as handbook for reading) with my K and 2nd grader, but chose not to use the other books simply because of my philosophy of homeschool--I don't want to recreate a classroom in my home that looks just like the Christian school down the road. I do more Charlotte Mason style, with lots of literature and "living books", steering away from textbooks.