I believe they are supposed to be in school before starting which is why there is no age less than 5. I will be signing my daughter up in the fall most likely as she's been asking to do EPGY since her brother is doing it. K did not take long at all for him (2 days I think, lol) and then first grade only took 2 weeks or so. After that he started running into things that were new to him so it took a little longer at that point.
Once you hit new things he will slow down, he may still learn new concepts quickly but it will take longer to fully master them.
