Responsible AI in the Duolingo English Test: Case Studies with Automatic Item Creation and Session-Level Quality Monitoring

Siyuan Marco Chen, Xiaowan Zhang, Andrew Runge, Jacqueline Church


Abstract
Digital-first assessments are delivered continuously and often remotely. Artificial intelligence (AI) enables digital assessments to generate content and administer tests at scale. Like any system used for high-stakes decision-making, digital assessments require responsible AI (RAI) practices to ensure fairness and validity. This paper presents two deployed systems in the Duolingo English Test (DET) lifecycle that align the DET to its RAI Standards. The Item Factory combines automated item generation with staged expert review; the Analytics for Quality Assurance in Test Taker (AQUA-TT) system applies unsupervised anomaly detection methods to continuously monitor for issues in digital test deliveries for daily individual test sessions. We present the design and performance of these systems and discuss what they imply for placing human judgment inside digital assessments.
Anthology ID:
2026.aimecon-sessions.12
Volume:
Proceedings of the Artificial Intelligence in Measurement and Education Conference (AIME-Con): Coordinated Session Papers
Month:
October
Year:
2026
Address:
Wyndham Grand Pittsburgh Downtown, Pittsburgh, Pennsylvania, United States
Editors:
Joshua Wilson, Christopher Ormerod, Magdalen Beiting-Parrish
Venue:
AIME-Con
SIG:
Publisher:
National Council on Measurement in Education (NCME)
Note:
Pages:
101–109
Language:
URL:
https://aclanthology.org/2026.aimecon-sessions.12/
DOI:
Bibkey:
Cite (ACL):
Siyuan Marco Chen, Xiaowan Zhang, Andrew Runge, and Jacqueline Church. 2026. Responsible AI in the Duolingo English Test: Case Studies with Automatic Item Creation and Session-Level Quality Monitoring. In Proceedings of the Artificial Intelligence in Measurement and Education Conference (AIME-Con): Coordinated Session Papers, pages 101–109, Wyndham Grand Pittsburgh Downtown, Pittsburgh, Pennsylvania, United States. National Council on Measurement in Education (NCME).
Cite (Informal):
Responsible AI in the Duolingo English Test: Case Studies with Automatic Item Creation and Session-Level Quality Monitoring (Chen et al., AIME-Con 2026)
Copy Citation:
PDF:
https://aclanthology.org/2026.aimecon-sessions.12.pdf