Reply to What type of MAP-M are 5th graders getting?

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Reply to "What type of MAP-M are 5th graders getting?"

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[quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous]So are the scale scores between the different levels of the MAP supposed to be more or less equivalent? There’s the one they take in K-2, the one they take 3-5 and then 6+… if a kid scores say a 250 on any of these is that score “supposed” to mean the same thing? [/quote]

Yes, with the caveat that MAP scores are extremely lossy. The overall score is an average of 4 subscores, and it is not a single-level test. (Contrast against IAAT which is specifically targeted at Algebra 1)
It uses statistical woo to arrive at a statistical "level".

In practical terms, this means that someone who has learned more math but is sloppy gets the same score as someone who has learned less math but is more careful and precise, despite the fact that those two students have differing needs for their near-term math education.

For MAP-M 3-5 vs 6+, it means that sloppy students who already know some HS Algebra and HS Geometry lose points on 3-5 for sloppiness but don't get points for Algebra and Geometry.

Careful students who only know Math 6 get points for accuracy but don't lose points for not knowing Algebra.

This doesn't matter much for Algebra placement, but explains why many students see a score drop when they switch to 6+ test. 
[/quote]

So how many fifth graders in MCPS get 250+ in the Fall? There are around 12,000 taking the test, right? If this is 250 is close to locally normed 85th percentile, it would mean about 1800 had this score? Could this really be true? I find that hard to believe.[/quote]

The locally normed score is based on the norming group.  MCPS says they group schools with similar FARMS rates together.  (This is in the faq on this websitehttps://www.montgomeryschoolsmd.org/curriculum/specialprograms/middle)  They separate into several norming groups - a PP says there are 5?  That means the top 15% of the scores are in the 85th percentile for that group.  So, if the group of low farms schools has 1,000 kids, 150 kids receive the 85th percentile or above.  Another group might have 5,000 kids, so 750 kids would be in the 85th percentile or above.  Each group will have a different cut off for the 85 percentile based on the actual scores students receive.  It will also change year to year, as they norm it each year.  Probably why they don't publish it because while the percentile stays the same, the associated RIT score is different for each grouping of schools each year.  [/quote]

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