So he took the test as a 10 or 11-year old? If so, that is VERY young and you will probably not find norms for this age group for any talent search, as most students are still taking the EXPLORE or other tests. Still, it is not unheard of - but you are probably then having to talk to parents of PG kiddos!
I have seen 6th grade norms for a talent search for ACT, but not 5th grade norms.

If you take a look at the 6th grade norms, as well as the DYS requirements, it sounds like your DS did extraordinarily well!
There was a recent discussion about using talent search results for a younger grade-skipped student. On one hand, it is more impressive when a child who is younger for grade does exceptionally well on ACT. On the flipside, though, is the issue of exposure; that is, a child who is grade skipped had access to material or teaching that a child the exact same age, but in a younger grade, does not. This is probably why grade is sometimes looked at, rather than age when evaluating results. Exposure does matter.
Either way, if he did exceptionally well on the ACT at a young age, it IS impressive!!!
BTW, quite a few here (including us) finally decided it was time to have our DC IQ tested after receiving talent search results.
