Lessons from evaluating large-scale professional development for educators in India
Across the world, teacher professional development is seen as one of the most powerful levers for improving learning outcomes.
And yet a persistent question remains:
Why do so many teacher training initiatives fail to change what actually happens inside classrooms?
At Populi, we recently evaluated a large-scale professional development initiative for educators working across diverse schools in India. The study followed educators who had participated in six-week professional learning programs focused on teaching practice, instructional leadership, coaching, and school leadership.
The evaluation used a mixed-methods design combining surveys with program alumni, in-depth interviews, and classroom observations to understand how educators internalise and apply professional learning in real classroom settings. We used a contribution analysis approach to examine how the program interacted with other factors such as school leadership, prior experience, and ongoing professional learning to influence teaching practice over time.
Using surveys, interviews, and classroom observations, the evaluation examined a critical question: What enables teachers to translate professional learning into sustained classroom practice?
The findings reveal a pattern that education systems often overlook: Training alone does not changes classrooms. Confidence, reinforcement, and the conditions in which teachers work make a difference.
Insight 1: Confidence is the bridge between Training and Practice
One of the strongest findings from the evaluation was the relationship between teacher confidence and implementation of new practices.
Teachers who reported higher confidence in their professional abilities were significantly more likely to apply the strategies they learned in their classrooms.
This finding has important implications. Professional development is often designed around knowledge transfer like introducing frameworks, strategies, or pedagogical techniques. But knowledge alone does not change behaviour.
Teachers must feel confident enough to experiment with new approaches, adjust them to their classrooms, and sustain them over time.
Without this sense of professional agency, training often remains theoretical.
Insight 2: School Leadership determines whether training sticks
Even when teachers gain new ideas and confidence, their ability to apply them depends heavily on the environment in which they work.
The evaluation found that teachers were far more likely to sustain new practices in schools where instructional leaders actively supported professional learning through activities such as reviewing lesson plans, observing classrooms, and providing feedback.
In schools with strong leadership support, the relationship between learning and classroom implementation strengthened significantly.
This reinforces a broader lesson for education reform: Professional development cannot succeed in isolation from school leadership.
When principals and instructional leaders reinforce new teaching practices, professional learning becomes embedded in the daily culture of schools rather than remaining an individual effort.
Even when teachers gain new ideas and confidence, their ability to apply them depends heavily on the environment in which they work.
Insight 3: Teachers remember practical tools not theory
Another striking pattern emerged when educators were asked what they remembered most from the training.
Teachers overwhelmingly recalled practical classroom tools.
The most frequently remembered elements included:
- classroom management strategies
- leadership approaches for guiding classrooms
- techniques for increasing student engagement
- lesson planning routines and instructional structures
These findings reinforce what decades of research on teacher learning suggest: Professional development is most effective when it focuses on practical routines teachers can immediately apply. Studies of effective professional learning show that teachers benefit most from development that is practice-focused, sustained over time, and connected directly to classroom instruction (Darling-Hammond et al., 2017).
Insight 4: Changes in teaching translate into changes in classroom culture
Educators also reported noticeable changes in classroom dynamics after applying the practices introduced during the programs.
Teachers described improvements such as:
- increased student engagement in lessons
- improved classroom behaviour and discipline
- stronger collaboration among students
- greater student participation and confidence in class discussions
While these outcomes are self-reported and cannot establish causal impact on learning outcomes, they suggest that changes in teaching practices can begin to reshape classroom environments in meaningful ways.
In many cases, the first visible shifts appear not in test scores but in how students experience learning.
A Simple Model for Sustained Learning
Taken together, the findings from this evaluation point to three reinforcing conditions that shape whether professional development translates into classroom practice.
1.Confidence enables experimentation.
Teachers are far more likely to try new approaches when they feel confident in their professional abilities.
2. Practice routines make change actionable.
Professional learning must translate ideas into concrete instructional routines such as lesson planning structures, engagement techniques, or classroom management strategies that teachers can implement immediately.
3. Leadership support sustains change.
School environments determine whether these practices take root. When instructional leaders review lesson plans, observe classrooms, and encourage reflection, new routines are far more likely to endure.
When these three conditions align, confidence, practice routines, and leadership support, professional development can move beyond training events and become part of a continuous learning culture.
Education systems around the world continue to invest heavily in teacher training. But improving learning outcomes requires understanding how teachers actually learn and change practice.
Effective professional development is about creating the conditions that allow teachers to experiment, reflect, and refine their practice over time.
When professional learning is designed with this in mind, it can begin to transform entire school cultures.
At Populi, our work focuses on helping organisations move beyond activity metrics to understand how programs actually influence practice and outcomes.
Evaluations like this help uncover the deeper mechanisms through which change happens from teacher confidence and leadership support to the everyday realities of classrooms.
Because meaningful impact comes from understanding how people learn, adapt, and grow within complex systems.
Author:
Payal Jain,
CEO, Populi
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