GROWTH DURING TRANSITION
A DISCUSSION OF ISSUES FACING STATES
Damian W Betebenner
National Center for the Improvement of Educational Assessment
San Diego, CA June 22nd, 2015
STATES: MORE ALIKE THAN NOT
• Idaho, Michigan, and West Virginia
• All states were using student growth (SGPs) prior to assessment
transition.
• All states have the desire to use growth during the assessment
transition.
• All states envision dif culties communicating the results and use in
accountability within the landscape of changing assessments
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CALCULATION & USE OF GROWTH
• Technical (calculation) issues versus accountability use/communication
issues.
• Barring the existence of signi cant oor/ceiling effects, calculation of
valid SGPs won’t be an issue.
• States that have already transitioned (e.g., Utah, Wyoming, and WIDA)
are able to calculate SGPs.
• Accountability use/communication more dif cult.
• Some states already battling bad impressions about student growth.
• “How can you calculate growth across different tests?”
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THREE BROAD OPTIONS
1. Modify accountability and growth (start fresh) going forward.
2. Modify accountability system during transition and continue with same
SGP growth
3. Continue with same SGP growth and accountability system as before.
GROWTH: DISPELLING SOME MYTHS
• It isn’t as hard to understand as popular perception suggests!
• Calculation may be complicated, but knowing how to calculate
student growth is not synonymous with understanding student
growth:
• The number π is difficult to calculate but is simple to
understand conceptually.
• Height and weight percentiles associated with children are
difficult to calculate but are simple to understand
conceptually.
• Computational details are important, but often obscure a
simple conceptual basis.
GROWTH: DISPELLING SOME MYTHS
MYTH: VERTICAL SCALES SOLVE YOUR PROBLEMS
• States transitioning to SBAC will have access to a vertical/
developmental scale.
• Vertical/developmental scales allow users to compare (and
subtract) scaled scores from grade to grade.
• A vertical scale (i.e., gain scores) is not a “growth model”
GROWTH: DISPELLING SOME MYTHS
MYTH: VERTICAL SCALES SOLVE YOUR PROBLEMS
• Growth as an amount of change:
• What could be more simple?
• Like height or weight just calculate the amount of change.
• Requires a vertical scale (which Indiana has up to this year
and will have going forward) or a set of ordered performance
levels.
• Growth = Score Time 2 - Score Time 1
• Not as simple as it seems: Comparisons between students
often lead to wrong conclusions.
GROWTH: DISPELLING SOME MYTHS
MYTH: VERTICAL SCALES SOLVE YOUR PROBLEMS
Let’s step outside of education for an example:
GROWTH: DISPELLING SOME MYTHS
MYTH: VERTICAL SCALES SOLVE YOUR PROBLEMS
• Which high jumper improved more?
• Judy’s best changed 2 inches.
• Anna’s best changed 6 inches.
• An inch is an inch!!!
• But is an inch really
an inch???
• Change versus improvement.
• 2 inches for an elite
jumper is far more remarkable than 6 inches for a novice.
GROWTH: NEXT STEPS
• An assessment transition is an extreme version of what has happened annually
• Correlations are likely sufficient to make SGPs informative.
• Growth to standard possible using test linkage, but un-tested at this point.
• Calculation is not the biggest issue! Explaining results is the biggest issue.
• Good artists borrow, great artists steal:
• Numerous states have produced great materials to help communicate results.
Meske Vigil Sample School
Level 5
How to interpret this student
growth & achievement report Move Up Level 4
Advanced
Target ●
● ● Catch
Target
Up
Keep Up ●● ● ●
Level 3
DEMO Target ●
Scale Score Level 2
Proficient
DEMO
Achievement
Part Proficient Level 1
Levels
Unsatisfactory
Student
Grade 3 Grade 4 Grade 5 Grade 6 Grade 7
Growth 2011−2012 2012−2013 2013−2014 2014−2015 2015−2016
Percentile Scale Score 469 541 558 1580
Achievement Level
Achievement Target
Proficient Advanced Proficient Level 3
Level 4 (1596)/Level 5 (1617) Level 4 (1614)
Achievement
Growth Percentile −− −− 53
Catch Up/Keep Up Growth Level −− −− Typical Growth
Move Up/Stay Up Growth Target Keep Up (76)/Move Up (93) Catch Up (71)
Targets
Level 5
Suggested Uses Advanced Move Up
Level 4
Target ●●
● ● ● Catch Up
Keep Up ●● ● ● Target
● Target Level 3
● Review past growth to assess ●
student academic progress toward
DEMO achievement goals.
Proficient Level 2
● Develop remediation or enrich−
ment plans based on rate of
growth needed to reach higher
DEMO achievement levels. Part Proficient Level 1
● Identify the rate of progress
needed in order to reach or Unsatisfactory
maintain proficient status
Grade 3 Grade 4 Grade 5 Grade 6 Grade 7
on the DEMO next year. 2011−2012 2012−2013 2013−2014 2014−2015 2015−2016
Scale Score 570 633 679 1842
Achievement Level
Achievement Target
Proficient Proficient Proficient Level 3
Level 4 (1896)/Level 5 (1910) Level 4 (1906)
Achievement
Growth Percentile −− −− 5
Growth Level
Growth Target
−− −− Very Low
Keep Up (85)/Move Up (96) Catch Up (92)
Growth
For more information please visit the Student Growth Percentiles Package (SGP Package) at www.sgp.io or contact dbetebenner@nciea.org
Cooperatively developed by the SGP Package & the Center for Assessment, Inc. Distributed by the SGP Package.
About this copy
Growth During Transition — CCSSO National Conference on Student Assessment, June 2015.
This is an image-based copy of the original Keynote slides; builds and animations are flattened.