many people have a perception that any kid that is advanced in any area has been drilled by his/her parents for early success in reading/math/whatever. however, if a kid legitimately learns concepts faster it is less likely that "levelling out" will occur - unless they are placed in a stifling learning environment where (for a whole host of reasons) they might learn to dull their spark.
my DD5 was certainly in one of those bad environments last year, and i barely recognized her after about three months of school. i firmly believe that she would have "levelled out" if we'd left her there - and i suspect the administration would have loved to have been proven "right."
