It seems like a miracle the way kids learn when they're enjoying it. My son was not even 5 years old yet when I pulled him out of school with his sister (who was one class ahead). At the time he read 3 and 4 letter words and I didn't really emphasise on the reading as he was still so young and where I grew up, we didn't start reading till the age of 6 or 7 and we are fine. The Dutch mostly are at least bilingual, which was the case for them too. Half way through the summer he read like his sister did. And I never really did anything! He taught himself, with a little help from us. It's amazing.