Looks like there will be new norms this fall for NWEA MAP tests.

https://www.nwea.org/assessments/map/scale-and-norms/

At NWEA™, we conduct regular norming studies that determine mean growth based on each student’s starting position on the RIT scale and the amount of instructional time offered. The 2015 NWEA norming study will include students whose districts or states have adopted and implemented the Common Core as well as those who have not. - See more at: https://www.nwea.org/assessments/map/scale-and-norms/#sthash.cd4ZRZtZ.dpuf