Damian Betebenner
Senior Associate, Center for Assessment
I work on how we describe student learning over time: student growth percentiles, growth projections, and the accountability and reporting systems built on them. This site gathers the talks I have given since 2005, a few papers, and the open-source R packages behind the analyses.
Recent talks
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WIDA ACCESS 2026–27 Proficiency Levels
Quarto
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Student Growth: The Pulse of the Education System
Quarto
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New Hampshire 2026 SGP Results
Quarto
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Educational Measurement as an AI-Native Profession
Quarto
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Writing an AI-Native Dissertation
Quarto
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Rhode Island 2026 SGP Analyses
Quarto
Selected talks
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Student Growth Percentiles: An Overview
Beamer
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Using Growth Norms to (in)Validate Years of Learning
Keynote
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Assessment Reporting in Support of Student Learning
Keynote
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Subverting Campbell’s Law
Beamer
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Growth, Standards and Accountability
PDF
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On Defining a Year's Growth
Beamer
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Norm- and Criterion-Referenced Student Growth
Beamer
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Toward a Normative Understanding of Student Growth
Beamer
Papers
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Norm- and Criterion-Referenced Student Growth
Damian W. Betebenner · Educational Measurement: Issues and Practice · 2009
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Growth, Standards and Accountability
Damian W. Betebenner · Center for Assessment · 2009
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Norm- and Criterion-Referenced Student Growth
Damian W. Betebenner · Center for Assessment · 2008
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On Defining a Year's Growth
Damian W. Betebenner, Yi Shang · Center for Assessment · 2008
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Growth as a Description of Process
Damian W. Betebenner · Lynch School of Education, Boston College · 2006
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The Impact of Performance Level Misclassification on the Accuracy and Precision of Percent at Performance Level Measures
Damian W. Betebenner, Yi Shang, Yun Xiang, Yan Zhao, Xiaohui Yue · Journal of Educational Measurement · 2008
Packages
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SGP
Student Growth Percentiles & Percentile Growth Projections/Trajectories.
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SGPdata
Exemplar data sets for the SGP package.
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SGPstateData
State-level metadata used by the SGP package.
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randomNames
Generate random gender- and ethnicity-specific names.
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toOrdinal
Ordinal numbers in several languages.