A quasi-experimental study at Indonesia's 550,000-student Open University compared 18,713 students in ChatGPT-assisted tutorials against 19,030 in human-tutored classes, finding small but statistically significant gains in assignment scores and forum engagement.
18,713
Students, AI-assisted classes
19,030
Students, human-tutored classes
7.42
Forum posts per student, AI-assisted
7.33 p=0.046
Forum posts per student, human-tutored
206.16
Assignment score, AI-assisted
202.89 p=0.003
Assignment score, human-tutored
37,743
Total students in study
Details
Maturity
Pilot
Promoter
Universitas Terbuka (Indonesia Open University)
Period
2024-2025 (published July 2025)
Keywords
higher education, distance learning, generative AI tutoring
Context
Universitas Terbuka (Indonesia's Open University), a distance-education institution enrolling more than 550,000 students nationwide, piloted a generative-AI tutoring model built on OpenAI's ChatGPT (versions 3.5 and 4.0) integrated into its Moodle learning-management system across four courses.
Objectives
Extend low-cost, round-the-clock academic support to geographically dispersed and lower-income students who cannot access private tutoring, while testing whether GenAI-assisted tutoring matches human-tutored outcomes.
Activities
Researchers Tian Belawati and Dimas Prasetyo compared 500 GenAI-assisted tutorial classes (18,713 students) against 500 human-tutored classes (19,030 students) in a quasi-experimental design. The programme pairs AI access with explicit instruction in prompt engineering and critical evaluation of AI-generated answers.
Results
Students in AI-assisted classes posted slightly more often in discussion forums (7.42 vs 7.33 posts per student, p=0.046) and scored marginally higher on assignments (206.16 vs 202.89 points, p=0.003); both differences were statistically significant but practically small (Cliff's Delta of 0.01 and 0.015 respectively).
Conclusions
The study, published in Open Praxis in July 2025, is among the largest quasi-experimental evaluations of generative AI tutoring conducted at a single institution to date, though the measured effects were statistically significant yet practically small.
Implementation
Indicative cost
Medium (€50k–€500k) — Built on a commercial LLM API (ChatGPT 3.5/4.0) integrated into the existing Moodle LMS across four courses, rather than a bespoke AI system.
Time to results
Short (< 1 year) — Piloted 2024-2025; study published July 2025.
Staffing & skills
Universitas Terbuka tutors/faculty, researchers Tian Belawati and Dimas Prasetyo
Conditions for success
AI access paired with explicit instruction in prompt engineering and critical evaluation of AI-generated answers
Integration into the existing Moodle LMS rather than a standalone tool
Common failure modes
No data-protection, bias-auditing or disclosure framework for the ChatGPT integration is reported
Effect sizes were statistically significant but practically small (Cliff's Delta 0.01-0.015)
Where it fits
Governance type
public distance-education university
Scale
institutional, across a national archipelago student body
Income level
lower-middle income
Commonly funded by
National / regional programmes
Indicative funding routes for practices of this type — always check each programme's current calls and eligibility rules.
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Claim it —
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Data sources
Where this practice's information was retrieved from, and when.
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