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.
• What’s New in EVAAS in 2018
• Updating or Adding District Admin Accounts

Tools and Resources

• Common Questions about Ohio's Value Added Student Growth Measure

Technical reports:

• Transition to New Test
• Introduction to URM Modeling Approach
• Technical report
• Dropout Recovery Technical Document
• Lowest 20%
• Accelerated Students and Value-Added

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: 7/17/2019 10:07:18 AM

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