You have to piece together a lot of different information, or just ask your school. NWEA is pretty guarded on releasing the information.
You can see from the parent toolkit that there is a MAP for Primary Grades (generally K-2, though some schools use K-1) which has a lot of the test reading questions to the student. You can also see from the toolkit that the test says students move up to about 260 in high school.
http://www.nwea.org/support/article/930Then if you keep reading, you'll find snippets where they discuss MAP 6+ like in this article about the integrated math assessments:
http://www.nwea.org/support/article/916And if you keep digging and digging, you'll get to this "familiarization of tests" article- which seems to be the only place the actual existence of two tests is mentioned!
http://www.nwea.org/support/article/familiarization-testsYou can find plenty of unofficial NWEA information out there on the two levels- including things like this:
http://www.fortheteachers.org/curriculum_ladders_math.htm