Cluster randomized trial of teacher coaching: Evidence from Lebanon's COACHing model

Last registered on January 05, 2021


Trial Information

General Information

Cluster randomized trial of teacher coaching: Evidence from Lebanon's COACHing model
Initial registration date
January 04, 2021

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 05, 2021, 6:58 AM EST

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



Primary Investigator

FHI 360

Other Primary Investigator(s)

PI Affiliation
The World Bank

Additional Trial Information

On going
Start date
End date
Secondary IDs
This study seeks to evaluate the causal impacts of a newly developed and adopted reforms to teacher coaching and teaching approaches by the Ministry of Education and Higher Education’s (MEHE) Department of Guidance and Counseling (Direction de l’orientation primaire et secondaire-DOPS). The MEHE-DOPS reformed the approaches in core subjects in public schools in alignment with the newly adopted teacher core competencies framework that focuses on introducing teachers to facilitation moves, deliberate practice, re-voice, and other elements of student-focused pedagogy. Training on the model was delivered to a group of coaches by New York University (NYU) between December 2019 and February 2020 and implementation is expected to begin December 2020 and January 2021 in a randomly selected set of schools with coaches and teachers of English, French, and Science in Grades 4 through 8. The evaluation is designed as a cluster-randomized controlled trial with treatment assignment at the coach level, 54 treatment coaches and 54 control coaches. The treatment coaches are then assigned to two schools where they observe two teachers with an average class size of 20 students. Further, the evaluation is structured with a pre- and post-treatment period for each coach who are tracked longitudinally throughout the evaluation. Control coaches, for the duration of this evaluation, will follow 'business as usual' assignments.
External Link(s)

Registration Citation

Azzi-Huck, Kaliope and Wael Moussa. 2021. "Cluster randomized trial of teacher coaching: Evidence from Lebanon's COACHing model." AEA RCT Registry. January 05.
Experimental Details


Intervention Start Date
Intervention End Date

Primary Outcomes

Primary Outcomes (end points)
1. Coach content knowledge on cross-curricular core practices and related strategies
2. Coach satisfaction and perceptions of coaching sessions and strategy utility
3. Teacher satisfaction with coaching and perceptions of strategy utility
4. Coach perceptions of teacher core practices
Primary Outcomes (explanation)
Outcomes will be constructed as indices using Principal Components Analysis of variables collected from coach, teacher, and classroom observation surveys.

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
This study employs a cluster-randomized controlled trial of 54 treatment coaches and 54 control coaches. Coaches are then assigned to two schools, two teachers per school, and approximately 20 students per teacher (classroom).
Experimental Design Details
Randomization Method
Randomization done via Stata.
Randomization Unit
The unit of randomization is the coach.
Was the treatment clustered?

Experiment Characteristics

Sample size: planned number of clusters
54 Coaches per treatment status. 108 total coaches.
Sample size: planned number of observations
Total of 432 teachers and 8640 students.
Sample size (or number of clusters) by treatment arms
54 treatment coaches and 54 control coaches.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)

Institutional Review Boards (IRBs)

IRB Name
IRB Approval Date
IRB Approval Number


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