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Weston

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2013 Accountability Data - Weston


District Information
District:Weston (03300000)
Region:Greater Boston
Title I Status:Yes
Accountability and Assistance Level:Level 1
Summary > Students w/ disabilities
Progress and Performance Index (PPI) Subgroup Data
View Detailed 2013 Data for Each Indicator Points Awarded
2010 2011 2012 2013
English Language ArtsNarrowing proficiency gaps (Composite Performance Index)100757575
Growth (Student Growth Percentiles)50507575
Extra credit for decreasing % Warning/Failing (10% or more)2502525
Extra credit for increasing % Advanced (10% or more)0252525
MathematicsNarrowing proficiency gaps (Composite Performance Index)7507575
Growth (Student Growth Percentiles)75505050
Extra credit for decreasing % Warning/Failing (10% or more)00250
Extra credit for increasing % Advanced (10% or more)250250
ScienceNarrowing proficiency gaps (Composite Performance Index)252510075
Extra credit for decreasing % Warning/Failing (10% or more)02500
Extra credit for increasing % Advanced (10% or more)025250
High SchoolAnnual dropout rate0075100
Cohort graduation rate-757575
Points awarded for narrowing proficiency gaps, growth, and high school indicators325275525525
Points awarded for extra credit507512550
Total points awarded375350650575
Number of proficiency gap narrowing, growth, and high school indicators6777
Annual PPI = (Total points / Number of indicators)63509382
Cumulative PPI = (2010*1 + 2011*2 + 2012*3 + 2013*4) / 10Met Target77
MCAS Participation 2010 2011 2012 2013
English Language Arts100%99%99%99%
Mathematics100%98%100%100%
Science99%98%99%99%

How Annual and Cumulative PPIs are Calculated
The annual PPI is a measure of the improvement that a group makes toward its own targets over a two-year period on up to seven different indicators. Groups are eligible for an annual PPI if a sufficient number of students were assessed (20 for schools, 30 for subgroups) in English language arts and mathematics in the most recent year and one of the two prior years. A group is awarded 0, 25, 50, 75, or 100 points based on the amount of improvement it makes from one year to the next:
100Above Target25No ChangeA group can earn extra credit for reducing the percentage of students scoring Warning/Failing and/or by increasing the percentage of students scoring Advanced by 10% or more on ELA, mathematics, or science MCAS tests. An additional 25 points for meeting each of these goals is added to the total number of points awarded.
75On Target0Declined
50Improved Below Target-Insufficient Data
The annual PPI is calculated by dividing the total number of points awarded by the number of indicators (up to seven). The cumulative PPI is the average of a group's annual PPIs over the most recent four year period, weighting later years the most (1-2-3-4). A group is assigned a cumulative PPI if it has three annual PPIs. While a group's annual PPI can exceed 100 points, the cumulative PPI is always reported on a 100-point scale. For a group to be considered to be making progress toward narrowing proficiency gaps, its cumulative PPI must be 75 or higher.

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