ADE Director's Communication Memo Form

Memo Number : COM-08-093

Date Created : 02/26/2008


Co-op Directors
Secondary Principals
Elementary Principals
other: Title III Directors
ESL Coordinators
ESL Teachers

Type of Memo: Informational
Response Required: No
Section:   Central Administration - Dr. Diana Julian, Deputy Commissioner
ELDA/Mac II Equating Scales

Regulatory Authority:

Contact Person:
Dr. Ellen Treadway

Phone Number:


In 2007, Arkansas began to use the English Language Development Assessment (ELDA) to assess the English language acquisition process of K-12 English language learners (ELLs). Up to that time, Arkansas had used the Maculaitis Edition II (Mac II).

In order to assess growth of individual students over time, it is, therefore, necessary to be able to express scores on the two tests on a common scale so that scores on the Mac II can be expressed as ELDA scores or ELDA scores can be expressed as Mac II scores.

Measurement Incorporated conducted an equating study that yielded equating scales for grades K-12. An explanation of the conversion analysis and K-12 ELDA/Mac II equating scales for composite scores and scores in reading, writing, listening, speaking, and comprehension are located on the Arkansas Department of Education Web site at

For questions about English Language Learner's assessment, including the ELDA/Mac II equating study and K-12 ELDA equating scales, contact Dr. Ellen Treadway in Curriculum, Assessment, and Research at 501-682-4252 or


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