CAN YOU BELIEVE! http://ow.ly/3Z9GS Here is a video from a family whose little boy, Jack, started souns when he was just about 20 months. We had just begun the program with our Early Intervention team in Georgia and he was one of our 1st. He is now 6 years old.
He is in the County School system now and does get exposed to different sight word reading programs currently, but you can see on this video how he knows how to sound out phonetically. You can look at two other links on the Youtube to see where he started with Souns. He is amazing!