Welcome! I'm in the wrong country to have any direct experience of MAP, but it is often discussed here so let me give you a few links until people who know more wake up...
Couple of possibly useful threads, where you'll find links to too many charts etc. for me to scrutinise (maybe someone will come along and tell you the most useful ones!)
MAP test score for reading going downMAP tests(Btw, google is a much easier way to find threads here than the site's own search buttong. E.g. if you google something like
MAP percentile kindergarten reading site:davidsongifted.org
and vary the terms a bit, you find loads of threads. You do have to page past the ones which are about maps, unless someone knows a way to make a google search case-sensitive!)
I found a reference to 170 being 99th percentile for K for reading, in some thread somewhere, but I've lost it now...
Here is one chart converting MAP RIT scores to lexile levels - if your DD is reading actual books for which you can find a lexile level, that'll give you a very rough idea of the MAP score to expect. (But it seems Kers are not normally expected to have made it onto the lexile scale - don't know about 95th percentile ones.)
Here is a spreadsheet from NWEA which looks as though it *ought* to be useful, though I couldn't get it to tell me anything about students below 1st grade or about reading...
Here is a page of games etc. to do with reading, organised by MAP scores. If the ones in the category 171-180 seem at or below your DD's level, maybe you're safe? Difficult for me to say!
Here is the corresponding thing for maths.
Hope some of that helps!