This may be be-laboring a point I made earlier, however.....
....that science project was certainly an EXCEPTIONAL effort. It was organized and structured and very visually stunning. I don't believe Kyron did the majority of the work putting it together, and indeed we have been told in a news reports that his SM helped him with it.
My sense is that there was pressure to do an exceptional effort on this project. The pressure certainly could have come from Kyron himself. He may be a perfectionist at his young age. At the very least, I would guess he is a high-achiever, perhaps even an over-achiever, judging by this project. I have not heard mention of his standing in his class, and indeed on the surface it wouldn't be pertinent to finding him. Yet if he DID have usually high expectations of himself, falling short of that may have played a role in his disappearance.
Were the science fair projects judged, and were awards and winners designated?