School Progress Index

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Index Summary

2012 School Progress Index (SPI)

The School Progress Index and the resulting Strand classification help identify schools for intervention, support, and recognition depending on their progress.

The School Progress Index evaluates schools on indicators of Achievement, Growth, and Gap Reduction for elementary and middle schools, and Achievement, Gap, and College- and Career-Readiness for high schools. The School Progress Index is compensatory so that a low value on one indicator can be balanced by a high value on another indicator.

An SPI Value is calculated for each grade span (elementary, middle, and high school) based on the school’s performance on the Indicators. If a school serves students in multiple grade spans, the overall SPI for that school is calculated based on the SPI for each grade span weighted by the population in each grade span.

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Carroll County’s 2012 SPI

Your School Progress Index for Gr. 3–12 is 1.0465
1.0452  1.0365  1.0541 SPI
Gr. 3–12
= 1.0465
Grade Spans
3–5    6–8    9–12
1.0465
Elementary School Grades 3–5
Indicators Grades 3–5 SPI Grades 3–5
Achievement Gap Reduction Growth Grade Span SPI
Progress Scale Math Read Sci Math Read Sci Math Read Combined Indicators
Indicator Progress Scale Values Indicator Contributions
1.2352 1.1054 0.9949 0.9716 0.9793 1.0513 1.0462 1.0297 arrowBlack 1.1118 1.0007 1.0379
33.33% 33.33% 33.33% 33.33% 33.33% 33.33% 50% 50% 30% 40% 30%
1.1118
1.0007
1.0379

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----- = Progress Scale Values


Middle School Grades 6–8
Indicators Grades 6–8 SPI Grades 6–8
Achievement Gap Reduction Growth Grade Span SPI
Progress Scale Math Read Sci Math Read Sci Math Read Combined Indicators
Indicator Progress Scale Values Indicator Contributions
1.0365 1.0880 1.0128 1.0368 0.9861 0.9310 1.0939 1.0992 arrowBlack 1.0458 0.9846 1.0966
33.33% 33.33% 33.33% 33.33% 33.33% 33.33% 50% 50% 30% 40% 30%
1.0458
0.9846
1.0966

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----- = Progress Scale Values


High School Grades 9–12
Indicators Grades 9–12 SPI Grades 9–12
Achievement Gap Reduction College- And
Career-Readiness
Grade Span SPI
Progress Scale Alg Eng Bio Alg Eng Bio Grad 2011 Drop 2011 Grad
2011
CCP
2010
Combined Indicators
Indicator Progress Scale Values Indicator Contributions
1.2593 1.1007 1.1008 0.9681 0.9937 0.9358 0.9690 0.9383 1.0950 0.9613 arrowBlack 1.1536 0.9610 1.0415
33.33% 33.33% 33.33% 20% 20% 20% 20% 20% 60% 40% 40% 40% 20%
1.1536
0.9610
1.0415

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----- = Progress Scale Values


Calculation of School Progress Index
School Progress Index (0.2954+ 0.3018 + 0.4493) = 1.0465
Elementary School Grades 3–5 Achievement Gap Reduction Growth Grade
Span SPI
% of Students in Grade Span Grade Span
Contribution
Indicator Progress Scale Values
1.1118
1.0007
1.0379
× Proportional Significance
Assigned to Indicators
in Calculating the SPI
30% 40% 30%
= Indicator Contributions
0.3335
+ 0.4003
+ 0.3114
= 1.0452 × 28.26% = 0.2954
Middle School Grades 6–8 Achievement Gap Reduction Growth Grade
Span SPI
% of Students in Grade Span Grade Span
Contribution
Indicator Progress Scale Values
1.0458
0.9846
1.0966
× Proportional Significance
Assigned to Indicators
in Calculating the SPI
30% 40% 30%
= Indicator Contributions
0.3137
+ 0.3939
+ 0.3290
= 1.0365 × 29.12% = 0.3018
High School Grades 9–12 Achievement Gap Reduction College- and
Career-Readiness
Grade
Span SPI
% of Students in Grade Span Grade Span
Contribution
Indicator Progress Scale Values
1.1536
0.9610
1.0415
× Proportional Significance
Assigned to Indicators in
Calculating the SPI
40% 40% 20%
= Indicator Contributions
0.4614
+ 0.3844
+ 0.2083
= 1.0541 × 42.62% = 0.4493

NOTE: Slight differences in SPI intermediate calculations may be attributable to rounding.

School Progress Index Data Last Updated 11/20/2014