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The Impact of In-School Math Tutoring: Evidence from a Field Experiment in Middle School

Last registered on January 19, 2024


Trial Information

General Information

The Impact of In-School Math Tutoring: Evidence from a Field Experiment in Middle School
Initial registration date
January 19, 2024

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
January 19, 2024, 2:23 PM EST

First published corresponds to when the trial was first made public on the Registry after being reviewed.


Primary Investigator

University of Chicago

Other Primary Investigator(s)

Additional Trial Information

In development
Start date
End date
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
We evaluate the impact of an in-school math tutoring program in a charter middle school in Indiana. The population served by this school is low-income, with 97% receiving free or reduced-price lunch. Students are randomly assigned to receive either 1) No Tutoring, 2) Tutoring two times per week in a two-student group, or 3) Tutoring three times per week in a three-student group. The tutoring cost is the same ($40 per week per student) in both tutoring treatment arms. Our primary hypothesis is that tutoring of either type will improve end-of-year math assessment scores relative to the control condition.
External Link(s)

Registration Citation

Shah, Rohen. 2024. "The Impact of In-School Math Tutoring: Evidence from a Field Experiment in Middle School." AEA RCT Registry. January 19.
Experimental Details


Middle school students will randomly be assigned to receive in-school math tutoring in either groups of 2 or 3. Those receiving tutoring will be pulled from science or history class. Those receiving tutoring in 2-student groups will receive two 30-minute sessions per week, whereas those receiving tutoring in 3-student groups will receive three 30-minute sessions per week.
Intervention Start Date
Intervention End Date

Primary Outcomes

Primary Outcomes (end points)
MAP assessment scores for mathematics (grades 6, 7, and 8)
Primary Outcomes (explanation)
This is a standardized mathematics test given to students in grades 6, 7, and 8 respectively. We will have baseline data of students' scores on this standardized test.

Secondary Outcomes

Secondary Outcomes (end points)
Math class grades
Secondary Outcomes (explanation)
End-of-year mathematics class grade

Experimental Design

Experimental Design
Of the approximately 300 students at this middle school, 150 will be assigned to receive in-school math tutoring. Our primary hypothesis is whether the average end-of-year MAP math score for the treatment students is higher than that of control students. We will also explore whether there is heterogeneity in the treatment effect based on the nature of tutoring. Specifically, 90 of the 150 treatment students will receive thrice weekly sessions in 3-student groups, whereas the remaining 60 will receive twice-weekly sessions in 2-student groups. The cost per student is the same ($40 per week per student) for both of these conditions, so a higher treatment effect for one type would imply a higher return on investment for that specification of tutoring frequency/group size.
Experimental Design Details
Randomization Method
Randomization done in office by a computer
Randomization Unit
Was the treatment clustered?

Experiment Characteristics

Sample size: planned number of clusters
Sample size: planned number of observations
Sample size (or number of clusters) by treatment arms
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
0.15 SD MDES

Institutional Review Boards (IRBs)

IRB Name
University of Chicago - Social and Behavioral Sciences IRB
IRB Approval Date
IRB Approval Number
Analysis Plan

Analysis Plan Documents


Post Trial Information

Study Withdrawal

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Is the intervention completed?
Data Collection Complete
Data Publication

Data Publication

Is public data available?

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials