I agree with the others that you DD sounds unusual compared to peers.
Is there any reason you need to know how others stack up on a similar test? Are you planning to put her in school? One of the benefits of homeschooling is not having to care about where others are and letting her go at her own pace.
To answer your question, for child 1: +3 GE in math and reading in K, STAR tests >12.9 in math and reading at age 7.
Child 2: +8 GE in reading and 4+ in math in K, >12.9 math and reading STAR tests at age 7.
STAR tests are very short and not that accurate and I assure you the scores above did not match up to actual academic needs. A more realistic assessment could come with achievement testing like WIAT or WJ and/or curriculum based assessments to see what she can do with a local school's curriculum at a particular level.
