Thanks CAMom, I read the link you mentioned above, it is helpful.

DS7 has never been on the same grade level on Map score since kindergarten, Every time he is tested (3 times a year, 6 times so far) he has jumped a grade.

When his teacher says a lot of our kids do what he is doing I do feel surprised.

How does one know that the test is Primary grade or 2-5 or 6+?