My son started reading at 2, was reading fluently on a first grade level at 3, was reading fluently on a third grade level when he started kindergarten, and after vision therapy during kindergarten was reading on a fifth grade level. Now in second grade he reads on a solid middle school level overall and at an adult level in areas of interest.

I fail to see how his more average peers are going to catch up with him by fourth grade.

They must be doing something wrong at Spring Hill School if their precocious readers start to fall behind by grade four.