Improving Student Learning with Hybrid Human-AI Tutoring: A Three-Study Quasi-Experimental Investigation

Bibliographic Data

Author(s)
Thomas, D. R., Lin, J., Gatz, E., Gurung, A., Gupta, S., Norberg, K., & Koedinger, K. R
Year of Study
2024
Publication
ACM
Artificial intelligence (AI) applications to support human tutoring have potential to significantly improve learning outcomes, but engagement issues persist, especially among students from low-income backgrounds. We introduce an AI-assisted tutoring model that combines human and AI tutoring and hypothesize this synergy will have positive impacts on learning processes. To investigate this hypothesis, we conduct a three-study quasi-experiment across three urban and low-income middle schools: 1) 125 students in a Pennsylvania school; 2) 385 students (50% Latinx) in a California school, and 3) 75 students (100% Black) in a Pennsylvania charter school, all implementing analogous tutoring models. We compare learning analytics of students engaged in human-AI tutoring compared to students using math software only. We find human-AI tutoring has positive effects, particularly in student’s proficiency and usage, with evidence suggesting lower achieving students may benefit more compared to higher achieving students. We illustrate the use of quasi-experimental methods adapted to the particulars of different schools and data-availability contexts so as to achieve the rapid data-driven iteration needed to guide an inspired creation into effective innovation. Future work focuses on improving the tutor dashboard and optimizing tutor-student ratios, while maintaining annual costs per student of approximately $700 annually.

Research Design

Study Design
Quantitative
Methodology
Quasi-experimental
Subject
Math
Grade Level(s)
6th Grade,
7th Grade,
8th Grade
Sample size
Study #1: 125
Study #2: 385
Study #3: 75
Effect Size
Study #1: AI + Math teacher + Tutor = 0.202 SD; Study #2: 0.244 ; Study #3: 0.36

Program Details

Tutor Type
AI + Human Tutors
Duration
1 day/wk
Student-Tutor Ratio
1:4, 1:4-1:8