Overview:
Effective teacher training improves teaching when it is built on trust, happens regularly, and is rooted in real classroom practice, allowing meaningful, sustainable change to spread among teachers.
It all started in the classroom where everything seemed to be going as planned. The students seemed engaged. The lesson was going on. Nothing seems to go wrong. But when the teacher and I sat down afterwards, he paused and said, “I think they’re doing the job, but to be honest, I don’t think they really understand what they’re doing.”
That moment didn’t come from my official viewing. Trust was born. From enough time spent working together that he didn’t have to do a lesson, but he could tell the truth about how he felt his lesson went. It’s that kind of training that changes classes. And it doesn’t happen by accident.
It starts with trust
We often talk about instructional training in terms of models, content-centered, learning-centered, and data-centered. And those are important. But the structure alone does not eliminate the habit. Hope does.
Research on active active learning consistently points to the same conditions: it should be reinforced, interactive, and embedded in the daily work of teachers (Darling-Hammond et al., 2017). Teacher training, if done right, does all three.
In my research with K–12 teachers (n = 307 with training experience), teachers consistently rated related training activities, such as collaborative planning and goal-setting discussions, as some of the most impactful parts of the process (Murugan, 2025). Collaborative planning (M ≈ 4.5, SD ≈ 1.1) and conference/goal planning (M ≈ 4.7, SD ≈ 1.0) emerged as processes with the highest impact on the six-point scale. Those are not times of compliance but of trust. This is where change begins.
Frequency Matters Most
If there’s one thing both research and experience make clear, it’s that coaching can’t be done at times. Decades of professional learning research have shown that one-time workshops do not lead to lasting instructional change, ongoing support does (Guskey, 2002; Joyce & Showers, 2002). What I found confirmed that. The frequency of coaching interactions was one of the strongest predictors of teacher-perceived teaching improvement, with models explaining about 44.7% of the variance (R² ≈ .447) (Murugan, 2025). It is not the type of training, or the years of experience that have done this.
Usually.
Teachers who experienced consistent training, that is, weekly or biweekly touchpoints, reported stronger instructional growth than those who received periodic support. This is consistent with extensive research showing that continuous training has had measurable effects on both teaching practice and student outcomes (Kraft et al., 2018). The change of command is repetitive. It requires trying something, showing, fixing, and trying again. A training cycle for instructional coaches that engages teachers Without that cycle, even strong strategies are proven ineffective.
Work Spreads in Ways We Can’t Always Measure
Some of the most powerful shifts I’ve seen in schools didn’t come with orders, but spread quietly. In a study, teachers who experienced more than one type of training (content-focused, didactic, or data-focused) reported greater instructional improvement (Murugan, 2025). On average, teachers experienced about 1.39 types of training (SD ≈ 0.65), which suggests that although exposure varies, depth is important. What was most important was what happened during that experience.
If one teacher tries something new with a coach, and it works, other teachers may take notice. A conversation may begin, and something subtle will begin to happen. The work is visible. A strategy that once lived in one classroom is starting to show up in conversations, during shared planning, in small moments between teachers. Not because it was ordered, but because someone saw it working and wanted to try it. I have come to think of this as a type “The Lantern Effect” in schools, where one teacher’s experience, supported by training, “lights the way” enough for other teachers to see what the possibilities are when working with an instructional coach. Once that light is there, it’s hard to ignore.
Training That Stays Close to the Classroom Wins
The most effective coaching does not live by theory, but stays true to the everyday teaching realities. Teacher training research has long emphasized the importance of job-focused, classroom-based support (Knight, 2007). What I found clearly echoed that.
Teachers reported higher levels of impact when coaching was directly linked to their current instruction, not the abstract techniques that PD sessions sometimes have, but real lessons, real students, real challenges (Murugan, 2025). This looks like this: Co-planning tomorrow’s lesson; Viewing student work from today; Preparing instructions for next week. It is not necessary for teachers to come up with other ideas on their own. They need expert support using ideas in context.
For School Leaders: What This Means in Practice
If we want instructional training to improve classrooms, we must create what will move the needle, not just what looks good at the time of observation. Here are a few changes based on both research and practice:
1. Prioritize frequency over input.
Creating space for ongoing issues of engagement beyond one-time access (Darling-Hammond et al., 2017).
2. Protect training time.
Continuous, sustained practice leads to meaningful change (Guskey, 2002).
3. Invest in relevant training methods.
Trust and cooperation are fundamental, not optional (Knight, 2007).
4. Focus on implementation, not just strategy.
Practice-based learning results in stronger results (Desimone, 2009).
Creating Lasting Teacher Education
At the end of the day, instructional training is not about programs or conventions, but about people and relationships. In my study, teachers reported a high level of overall teaching improvement (M ≈ 5.13, SD ≈ 0.80). Interestingly, that improvement was not tied to a single training model, but rather to consistency, relational trust, and opportunities to apply real-time learning.
When that happens, the training is not always contained, but spread. Quietly at first, it becomes more visible. Until one class becomes two. Then there are five. Then the whole team. That’s when you know something is working. Not because it was needed, but because it was chosen.
