There were also at least 2-3 kids in their K-1 classes who seemed to be on the low end of the learning-to-read curve who were sensational way-ahead-of-grade-level readers by the time they hit 3rd grade.
polarbear
This.
We have friends who are fellow homeschoolers whose son was an extremely late reader: he really didn't "click" until around fourth grade. Three years later, he's reading as well as my son, who was your typically-aged early reader and progressed at a pretty standard pace, and my daughter, who read early and promiscuously (everything from Franny K. Stein and Frances the Badger to Sylvia Plath and Sharyn McCrumb).