Value-Added Resources

Ohio's Value-added system uses an advanced methodology Education Value-added Assessment System (EVAAS) initially formulated by William Sanders and further developed by Sanders and colleagues at SAS Institute, Inc.  These procedures, while computationally complex, have a substantial body of empirical testing in research literature to support them. 

Value-Added Data Access

• Access the secure Value-Added website (EVAAS) and your district's value-added diagnostic data.
• Updating or Adding District Admin Accounts

Tools and Resources

• Common Questions About Ohio's Value Added Student Growth Measures
• Regional Data Lead Network

Technical reports:

• Introduction to URM Modeling Approach
• EVAAS Technical Document and Business Rules - Updated 1/13/2023
• Dropout Recovery Technical Document
• Accelerated Students and Value Added
• Understanding Student Growth Reports in 2021
• Research Paper on Missing Tests from 2019-2020

Related Research

• Comparisons Among Various Educational Assessment Value-Added Models (William L. Sanders)
• An Investigation of Two Nonparametric Regression Models for Value-Added Assessment in Education (S. Paul Wright)
• Measurement of Academic Growth of Individual Students Toward Variable and Meaningful Academic Standards (S. Paul Wright, William L. Sanders, June C. Rivers)

Last Modified: 1/13/2023 1:42:57 PM

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