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This dissertation provides a comprehensive validity investigation of the DAACS Reading and Mathematics assessments to ensure that college readiness comparisons between adult learners (age 24+) and traditional-age students rest on psychometrically sound measurement. Accordingly, the dissertation emphasized the collection of internal structure validity evidence for DAACS mathematics and reading assessments.

Predictive validity evidence for a no-stakes, untimed, machine-scored diagnostic writing assessment

By DAACS in publications

January 16, 2026

Data from 2719 non-traditional students at an online university support the hypothesis that writing assessment scores predict future performance. The study contributes to the validity evidence for the interpretations of students’ DAACS writing assessment results. In addition, it indicates that a writing assessment does not have to be expensive, high-stakes, proctored, or timed to be useful.

A Comparison of College Readiness among Adult and Traditional-Age College Students

Predictive validity evidence for a no-stakes, untimed, machine-scored diagnostic writing assessment

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