Here is a chart that explains more about the NWEA tests and shows what level your DS is at - NWEA chart

If you look at page 69 and if I read the chart correctly - it looks like your DS scores at the 94th percentile for 6th graders, 82nd percentile for 8th graders, and all the way up to a 74th percentile for 11th graders.

Our school doesn't use the MAP tests for any acceleration at all. It is just more data for them to see whether or not a student is making progress. It may be different for other schools.

Other people on here may have more information for you.