My 7 years old DS is taking classes with both 2nd-grade and 8th-grade. He recently took PSAT 8/9. He scored 97th percentile overall, 99th percentile math and 63rd percentile EBRW. This is higher than the 5th grader Davidson Young Scholar test requirement. However, his grade level is 2nd or 8th, which is not within the 3rd to 6th-grade PSAT requirement range. He won't be allowed to use this test result to apply for the young schor program.
The test requirements only care about the grade level, no the age.
Welcome!
Not speaking for DYS at all, as I am merely a member of the public, and have no official standing:
But I would suggest contacting them directly and requesting that they advise on appropriate use of his testing data for a DYS application. My personal reading of the requirements is that the grade level to use as a reference should be the one in which the child is currently enrolled, or has just completed (if between school years). Your child appears to be enrolled in second grade, with single subject acceleration to eighth grade. That would make him a second grader (since he hasn't received instruction in all subjects past the second grade). It would seem reasonable that the standard of "meet or exceed" as a second-grader would be met if he meets or exceeds the third (or fifth!) grade criteria. It also seems likely that the chart doesn't show 2nd grade because there aren't enough 2nd graders in the data set to justify a robust cutoff score.