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[quote=Anonymous][quote=Anonymous]

This is what happened at Sela this year.  Can someone explain why PARCC scores would bring down the score after MAP scores were only included the first few years?[/quote]

The MAP growth score is calculated against a national pool of similarly scoring students.  PARCC growth scores are calculated against a pool of similarly scoring students in DC.  There must be something about how those shake out that a lot of the DC schools do better against the national pool.  This is from the PCSB manual:

"1. Progress Measure for grades K-3
a. Measure: NWEA MAP’s CGP captures the student’s percentile of growth compared
to all students in the same grade with the same starting RIT score in grades K-3 to
measure student progress.8 The CGP for each student is set by the publisher’s 2015
norms, based on the student’s initial assessment score. Note: this measure is included
in the tiered portion of the PMF only for schools ending in grades kindergarten, 1, 2,
or 3.
(1) A CGP is calculated for each student by the publisher, which shows how the
student performed compared with other students, nationally, who take NWEA
MAP.
(2) All students’ CGP scores for a school are arrayed from high to low and the
median of these scores becomes the school’s growth score for both ELA and
Math. The higher the score, the more improvement students made compared
with all students, nationally, who are taking the same assessment.
(3) This is a one-year measure."[/quote]

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