My S17 could also read at 3. We had him enrolled in a very good 'developmental' preschool. He really had no problems at this age. His preschool simply handed him books to read to himself & paper to write on. While the other kids were scribbling pictures, he was doing the same plus adding his own 'stories'. His school was mostly about outside time, playing with other kids, and had almost no formal 'school' time. Which is what I think preschool needs to be for ALL kids. It honestly worked out great.

It was Kindergarten that was another issue. But I don't have the time to go into that in detail.