We homeschool and my wife has taught 7 of our 8 kids using:
Teach Your Child to Read in 100 Easy Lessons.
Highly recommended for parents with kids at the age to start reading.
It works far better than most educational programs, but teachers tend to hate it because it doesn't give them latitude for creativity and planning their own lessons!
I'm finding that as I get older, I make more mistakes like that when I'm tired.
Leave it to the NYT to fear monger about small groups of children. Hahaha