Supporting Student Growth and Program Improvement with Colorado’s Growth Model Dwayne D. Schmitz (dschmitz@psdschools.org) Poudre School District Fort Collins, CO CCSSO - June 17, 2008 June 17, 2008 1 Dwayne Schmitz, PhD.

Student Growth Percentiles Provide: ■ Useful measures of student growth ■ Typical Growth ■ Adequate Growth ■ Identification of programs associated with unusually high or low levels of growth ■ Individualized projections of what future levels of growth will “buy” a student in terms of performance levels June 17, 2008 2

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Understanding School Performance High High Status High Status Low Growth High Growth Achievement Level (Status) Low Status Low Status Low Growth High Growth Low Low Longitudinal High Growth June 17, 2008 6

One Cohort’s Movement Through A School – Math 2005 to 2007 7th SGP Medians (2005-2007) 8th SGP Medians (2005-2007) 9th SGP Medians (2005-2007) 80 80 80 9th MedSGP_7th MedSGP_8th MedSGP_9th 8th 7th 2006 Year Year Year June 17, 2008 7

SES & School Aggregates: 9th Grade Math Average Scale Score Median Growth Percentile AA A A AA A AA AA A AAA A AAAA AAA A 75 AAAA A AA AAA A AA MeanScaleScore A AA A A AAA A A A A A AA A AAAA A A AA AA A AA A A AA A A AA AA A AA A A AA A AA A AA A A AA AA A AAA A AAAA A A A AAA AAA A MedSGP AAA AAA AA A A A AA A AA AA A A A A A A AA A A AA A AA A A A AA AA A AA A A A A A AAA AAA A A A AA AA AA AA A AA AA A A AA A A AA A AA A A AAA A A A AA A A A A A AAA A A A AA A A A AA A A AA AA A AA A A A AA A AA A A AA A A A 50 AA A A A A AA AA AA AA A A AA A AA AAA AAAAA AA AA AA A A A A A A AA A A A AAA A A AA A AA A A A AA AA A A A AA A A A AA A A A A A AAAAA A A AA AA A A AA A A A A AA A A A AA A AA A A A A AA AA AA A A A AA A AA A A A A AAA A A A AA A A A AA ForR_Pct ForR_Pct June 17, 2008 8

ELL & School Aggregates: 9th Grade Math Average Scale Score Median Growth Percentile A AA A A AAAAA A A AA A AA AAAAA AA 75 AAA AA A AAA A A AAAAA A A MeanScaleScore A AAA A AAAA AA A A AA A AA A A A AAAAAA AA A A AAAA AAA AA A AAA AAAA A AAAA AAAA AAA A A A MedSGP A AAA AA AA A A A A AA A AA A A AA A A AA A A AAAAA A A AAAA A A AAAAA A A A A A AA AA A AA AAAA A A AA AA A A A A A AAAA A A A A AAAAAAA AA A AAA AA A AAA A A AAA A AA A A AA A A AAA AA A A A 50 A AAA A A A A AA AAAAAAAAAAAA A AA A AA AAAA A AA AAAA AAAAA A A AA A A AAAA AA A A AAA A AAA AA A A A A A AAAA A AAA A A AAAA A A A A A 550 AA A A AA A A A A A AAAA AA A A A A A AAA AA A AA A A A A A A A AA AA A A A A 25 AA AA ELL_Pct ELL_Pct June 17, 2008 9

Validity Check: Alignment with an Appropriate Trajectory Model ■ Ideally, broad conclusions regarding student growth would not be sensitive to model choice, assuming models used are appropriate. June 17, 2008 10

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Recall: Scatter Plots and Correlation Correlation = 0.975 Each point is a single persons height measured in inches and in feet by Height_ft elementary students. The points do not fall A on a perfect line due to A measurement error. Height_in June 17, 2008 12

2007 CEM Effects and Median SGP 9th Grade Math AA AA A AA A AA A A A A CenteredEb0_07 A A A A AA A A AA A A AA A A AAAA AA AA AAAA AA A AA A A A AA A A A A AAAAA A A A AAAAA AAA A A A A A AAA AA AAA AAA A A A A A AA A A AA A A A A AA AA A AA AAA AA A A A AAA AA AA AAAAA AA A AA A AAAA AAA A 0 A AA A AAAA A A AAA AA A AAA A A A AA AA AAAA A AA A A A A AAA AA A AAAA A A AA A A A A AAA AA AA AAAA AAA AA AA AA A A AA A A AA AA AAA A A A A AA A AA AAA A A A A AAA A AAA AA A A A A A A AA AA A AA AAA A AA AA AA A A AA A A A A A AA A A AA Med_M07 June 17, 2008 13

2007 CEM Effects and Median SGP Correlations for All Data Subsets Grade Reading Writing Math ■ Note: SAR growth eligible students only. June 17, 2008 14

Several Benefits of Student Growth Percentiles: ■ Understandable at conceptual level which is critical for generating meaningful discussions ■ Provides defensible and actionable answers to basic questions about academic growth ■ Not overly dependent on measurement properties of underlying instrument ■ Readily supports secondary analysis at district and school level June 17, 2008 15

Adoption and Use of Student Growth Percentiles in Colorado ■ http://www.cde.state.co.us/index_accredit.htm June 17, 2008 16

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Supporting Student Growth and Program Improvement with Colorado’s Growth Model — CCSSO, June 2008.

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