The Monday Morning Test: Does Professional Development Actually Change Teaching?

The Monday Morning Test: Does Professional Development Actually Change Teaching?

Schools invest enormous amounts of time in professional development.

Teachers attend workshops. Experts give presentations. Leaders introduce new approaches. Departments organize training. Teachers take notes, discuss strategies, complete reflections, and sometimes leave genuinely inspired by what they have learned.

But professional development should eventually have to pass a simple test.

Imagine a teacher attends an excellent professional-development session on Friday. The ideas are convincing. The examples are practical. The teacher leaves with a strategy they genuinely want to try.

Then Monday morning arrives. The students sit down. The lesson begins.

Does the teacher ask different questions? Give students more responsibility? Use assessment differently? Adapt a task? Try the strategy that seemed so promising on Friday?

Or, despite a valuable training experience, does the classroom gradually return to what it looked like before?

Versions of the phrase “Monday morning test” have been used in professional learning before, usually to ask whether teachers can take something from training and actually use it when they return to the classroom.

That is an important test. But I find it useful to extend the idea further.

A teacher can use a strategy on Monday without it improving learning. A teacher can understand an idea without being able to apply it effectively. Practice can change without the student experience changing very much at all.

So rather than one Monday Morning Test, I think there are four useful questions.

The Four Monday Morning Tests

1. The Learning Test Did the teacher actually learn something?

2. The Practice Test Did professional practice change?

3. The Learner Test Did students experience something meaningfully different?

4. The Impact Test Did that difference contribute to better learning?

The progression is useful because it helps us see where change is—and is not—becoming visible.

But it should not be mistaken for a perfectly linear model of professional learning.

Real classrooms are messier than that.

Teachers try something, observe students, rethink their assumptions, modify the strategy, seek feedback, learn something new, and try again. Student response itself becomes part of teacher learning.

So when the hoped-for change does not appear, the most useful question may not be:

It may be:

That changes the purpose of the Monday Morning Test. It is not a test of the individual teacher. It is a test of the professional-learning system.

Recent research gives us reason to be both optimistic and cautious. A 2025 meta-analysis of 128 high-quality experimental and quasi-experimental studies found an average positive effect of teacher professional development on student achievement of 0.09 standard deviations, classified by the authors as a medium effect using an education-specific benchmark. But effects varied considerably across studies, with a 95% prediction interval ranging from -0.15 to +0.32. The number of professional-development hours was not a statistically significant predictor of effectiveness.

OECD’s TALIS 2024 survey offers another perspective. Across OECD education systems, only 55% of teachers reported that the professional learning they had undertaken during the previous 12 months had positively affected their teaching. That is teachers’ perception of impact, not an objective measure of classroom effectiveness, but it still raises an important question about what happens after professional learning takes place.

Professional development can work.

1. Diagnose: Understand the Barrier Before Choosing the Development

Schools often begin professional-development conversations with the solution.

“We need a workshop on differentiation.”

“Let’s organize AI training.”

“Teachers need training in questioning.”

But those statements already assume that training is the answer.

Suppose classroom observations show that teachers ask plenty of questions, but most require short recall answers.

The problem is no longer:

“Teachers need questioning training.”

The desired change might instead be:

Now we can ask:

Perhaps teachers do not know how to construct deeper questions. But perhaps they do. Maybe they worry that discussion will take too much lesson time.

Maybe students lack the language to explain their thinking.

Maybe teachers ask excellent questions but answer them themselves after two seconds of silence.

Maybe curriculum pressures discourage extended discussion. Maybe classroom routines do not support it. Those are different problems.

They require different responses.

Only then should we decide what professional development looks like.

Look for the Gap Behind the Gap

Imagine observing a teacher whose lessons contain very little student discussion.

The obvious conclusion might be:

“The teacher needs training in student-centered learning.”

Perhaps. But the teacher may understand student-centered learning extremely well.

The actual barrier might be classroom management. The teacher fears losing control during group work.

It might be language. Students do not yet have the vocabulary needed to sustain discussion.

It might be assessment. The teacher believes discussion will not help students succeed on an examination.

It might be confidence. The teacher tried the approach before, it went badly, and returned to something safer.

Or it might be workload. Designing different learning experiences currently feels impossible.

The visible behavior is the same. The development need is not. And diagnosis should not be something management simply does to a teacher.

Ask the teacher. Look at student work. Examine lesson plans.

Observe where appropriate. Discuss what the teacher was trying to achieve.

The manager may see something the teacher cannot see. The teacher may understand something about the classroom that the observer cannot see.

Sometimes that conversation will reveal something even more important:

It may require better resources, clearer expectations, protected planning time, curriculum changes, or the removal of an unnecessary administrative burden.

Before adding training, make sure training addresses the problem you actually have.

What If the Teacher Isn’t the Problem?

There is another reason to start with diagnosis.

When a new practice fails to appear consistently, schools can quickly conclude:

“Teachers need more training.”

But what if the original idea was wrong?

Perhaps the strategy sounded convincing but rests on weak evidence. Perhaps it worked somewhere else but does not fit this context. Perhaps the expected change was unrealistic.

Perhaps the school underestimated the resources required. Perhaps implementation was poor. Perhaps the initiative was adopted because it was fashionable.

Or perhaps the teacher tried it properly and it simply did not produce the result we expected.

Professional development should contain the possibility that the organization changes its mind, not only that the teacher changes their practice.

Otherwise, evidence-informed leadership can quietly become evidence-decorated compliance: research is used to justify what teachers have already been told to do rather than to help everyone—including leaders—learn whether the decision was right.

That second question may be even more important than the first.

2. Design: Work Backward From the Classroom

Once the need is clearer, professional learning can be designed backward from the change we actually want.

Teacher training is often designed forward:

Try reversing the logic.

This turns the workshop from the professional-development program into one part of the professional-learning process.

At the end of a session, don’t only ask:

“Did teachers enjoy it?”

or:

“Did they understand it?”

Ask:

If nobody can answer that, the Monday Morning Test is already in trouble.

Make the First Change Small Enough to Try

Many professional-development goals are too large to act on.

“Use more differentiation.”

“Make lessons more student-centered.”

“Improve formative assessment.”

“Use AI effectively.”

These are directions. They are not actions.

Instead of Improve questioning, try:

Instead of Differentiate more, try:

Instead of Increase student engagement, try:

Now there is something to try. And something to examine afterward.

Common Learning, Different Pathways

Teacher development also presents an interesting contradiction.

Schools increasingly recognize that students differ in readiness, experience, strengths, and support needs.

Yet twenty, fifty, or one hundred teachers can enter a professional-development room and receive exactly the same learning, at exactly the same pace, for exactly the same amount of time.

Some common professional learning is necessary. Safeguarding, curriculum changes, assessment systems, accreditation priorities, or strategic initiatives may require shared understanding.

Another may need observation and feedback.

Another may already demonstrate the practice consistently and would learn more by coaching colleagues or tackling a more advanced problem.

The useful question is not:

Individual or whole-school professional development?

It is:

3. Try: Professional Learning Has to Enter the Classroom

Eventually, professional learning has to leave the training room. A teacher has to try something. This is where the four tests become useful.

A 2022 meta-analysis of 27 studies examining professional development in differentiated instruction found significant improvements in teacher outcomes such as knowledge, attitudes, and practices, but no statistically significant overall effect on student learning.

That does not mean the professional development failed. It shows why we should not treat different outcomes as though they were the same.

Each connection deserves attention.

If teacher learning improves but classroom practice does not, ask what is blocking application.

If practice changes but students experience little difference, examine how the practice is being implemented.

If students experience something different but learning does not improve, reconsider the strategy, the evidence being collected, the time frame, or the original assumptions.

And remember that teachers may move backward and forward through these stages as they learn from what happens.

Instead of simply concluding:

It worked.

or:

It didn’t work.

ask:

More Than One Way to Learn

Learn — through reading, a workshop, research, or expert input. See — through modeling, a demonstration lesson, video, or colleague observation.

Plan — through collaborative planning or task redesign. Try — through a manageable classroom experiment.

Observe — through peer observation, coaching, video, student work, or another source of evidence.

Reflect — through professional dialogue or self-reflection. Adapt — and try again. This is not a sequence every teacher must complete.

Research on effective professional development similarly points toward mechanisms such as goal setting, feedback, action planning, practice, and revisiting prior learning rather than assuming that one particular format is inherently effective.

And that leads to another useful question for teacher trainers:

There is something contradictory about telling teachers to create active classrooms while they sit passively through a two-hour presentation.

Teachers can analyze student work. Redesign tasks. Practice questioning. Compare alternative approaches. Solve classroom problems. Plan applications. Challenge ideas. Give and receive feedback.

Professional development should not merely describe effective learning. Where appropriate, it should model it.

4. Learn From Evidence: Observation Without the Performance

This is where classroom observation can become particularly valuable. But observation often carries baggage. A senior leader enters with a clipboard.

The teacher knows they are being evaluated. The natural response is to demonstrate competence. Professional learning requires something slightly different.

It requires permission to develop. If I am trying something new, there is a reasonable chance I will not execute it perfectly.

If every observation feels like a performance, why would I take that risk?

Afterward, begin with evidence rather than judgment.

Instead of:

“Students weren’t engaged.”

try:

“During the independent task, seven students stopped working within the first three minutes. What do you think was happening?”

Evidence invites thinking. Judgment often invites defense.

Formal evaluation still has a legitimate role. Schools need professional standards and accountability.

But evaluation and development are not identical purposes. Schools should be clear which one an observation is serving.

Feedback Should Produce the Next Experiment

A developmental conversation should lead somewhere. Not to ten targets. To one or two manageable next steps.

This gives us a professional-learning cycle:

Around that cycle sit three enabling conditions:

And underneath it sits the question that matters most:

5. Sustain: Time Matters, but Hours Are Not the Goal

Professional learning requires time. Time to learn. Time to plan. Time to try. Time to observe. Time to reflect. Time to adjust.

But we should not confuse time for development with accumulated PD hours.

The 2025 meta-analysis of 128 high-quality studies found that the number of professional-development hours was not a statistically significant predictor of effects on student achievement.

An older but instructive randomized U.S. study makes the same point from another direction. Seventh-grade mathematics teachers were offered intensive professional development focused on rational numbers—68 hours in the first year and up to 118 hours across two years. Researchers found an effect on one of three measured instructional practices in the first year, but no evidence of improved teacher knowledge at the end of the intervention or improved student achievement in rational numbers. Teacher turnover also meant the average additional PD actually received over two years was lower than the amount offered.

The lesson is not:

Time doesn’t matter.

It is:

Time makes learning, practice, feedback, and adjustment possible. But time itself is not the intervention. What happens during that time matters.

Put the Follow-Up on the Calendar First

This gives managers one extremely practical rule.

Before approving professional development, ask:

If the answer is:

“We’ll follow up later.”

there is a reasonable chance later will never arrive. Design the continuation before the training begins. Perhaps collaborative planning happens two weeks later.

Perhaps a developmental observation follows. Perhaps teachers examine student work several weeks after that. The exact sequence should depend on the goal.

Do not leave transfer to chance. And continuous professional development does not mean constant professional development.

Nobody needs twelve simultaneous improvement targets.

One meaningful goal pursued seriously may produce more development than five initiatives introduced superficially.

Continuity means maintaining the thread between learning, practice, evidence, and the next decision.

Implementation Is Not Imitation

There is another tension once teachers begin trying something new.

How closely should they reproduce what they were shown?

Too much prescription can remove professional judgment. Too much adaptation can remove the very feature that made the approach promising.

Implementation guidance from the Education Endowment Foundation offers a useful way of thinking about this: identify the active ingredients of an approach and distinguish between elements that require greater fidelity and elements that can be adapted to context—knowing where to be “tight” and where to be “loose.”

For teachers, that means:

But also:

A teacher trainer should therefore be able to answer:

If that is unclear, implementation becomes guesswork.

Promising Approaches Are Not Magic

Coaching illustrates the danger of confusing a promising format with a guaranteed result.

A major meta-analysis of 60 studies using causal research designs found pooled effects of 0.49 standard deviations on instructional practice and 0.18 on student achievement.

Those findings are encouraging. But much of the evidence came from literacy coaching involving pre-K and elementary teachers in the United States, and effects were smaller in larger-scale effectiveness trials.

The lesson is not that coaching works everywhere. It is that the conditions behind an effective approach matter as much as its label.

The same caution applies to workshops, professional learning communities, peer observation, lesson study, and other professional-development formats.

Measure What You Actually Want to Know

Schools often collect the easiest professional-development data.

Who attended? How many hours? Did participants enjoy it? Would they recommend the trainer?

Those questions are not useless. But they mostly tell us about participation and reaction.

Reaction — Was the professional learning relevant and well designed?

Learning — What did teachers understand or learn?

Application — What changed in practice?

Student experience — What changed in what students were doing?

Student learning — Where reasonably measurable, is there evidence that learning improved?

Not every professional-development initiative needs test-score evidence.

And schools should resist creating pseudo-data simply because something needs to be entered into a spreadsheet.

It might be student work, a short observation, student responses, a revised task, teacher reflection, a video clip, a brief student survey, or assessment evidence.

The purpose is not to create another reporting system.

It is to answer a much simpler question:

Five Traps for School Leaders

The Activity Trap

We provided PD, therefore development happened. Providing an opportunity is an input. Development is a change.

The Hours Trap

More PD must produce more improvement. Teachers need time, but accumulated hours do not guarantee impact.

The Format Trap

Coaching works, therefore introducing coaching will work. The label tells us little about the quality of what actually happens.

The Teacher Trap

The change did not happen, therefore the teacher failed.

Perhaps. But first examine the diagnosis, support, implementation conditions, leadership, workload, and the strategy itself.

The Measurement Trap

If student scores do not immediately increase, the professional development failed.

Some outcomes take time. Some require different evidence. And some worthwhile changes will not immediately appear in attainment data.

A Practical Monday Morning Check

This is a thinking tool, not another form for teachers to complete.

Before professional learning:

What are we actually trying to change?

What evidence tells us this matters?

What is preventing the desired change?

Is professional development really the right response?

During it:

Are teachers doing meaningful thinking?

Can they see what the practice looks like?

Can they practice it?

Do they understand why it should work?

Do they know what can be adapted and what needs to remain intact?

After it:

What will teachers actually try?

What support is available?

What evidence will we examine?

When will feedback and reflection happen?

And eventually:

Did teachers learn something useful?

Did practice change?

Did students experience something different?

Is there evidence of improved learning where we can reasonably expect to see it?

What should happen next?

That is considerably more demanding than:

We ran the workshop. Perhaps it should be.

The Monday Morning Test

So we return to Monday morning. The workshop may have been excellent. The speaker may have been inspiring.

Teachers may have enjoyed it. The slides may have been shared. The feedback survey may have been overwhelmingly positive.

None of those things is meaningless. But none of them, by itself, tells us whether professional development worked.

The more interesting questions come later. Walk into the classroom.

Is the teacher asking different questions?

Are students doing more of the thinking?

Has assessment changed?

Are tasks better matched to learners?

Is technology being used more purposefully?

Is the teacher making different instructional decisions?

And if nothing has changed yet, don’t immediately ask:

Ask:

Was the goal clear?

Was the original need understood correctly?

Did the teacher learn what was intended?

Did they see it modeled?

Did they have an opportunity to practice?

Was the expected change manageable?

Was there enough time?

Was useful feedback available?

Did classroom conditions make implementation difficult?

Did we protect the essential ingredients while allowing sensible adaptation?

And perhaps most importantly:

The Monday Morning Test is therefore not really a pass-or-fail test. It is a way of refusing to stop our evaluation of professional development at participation.

It asks us to keep following the connections:

And whenever the answer becomes unclear or disappointing, the question is not automatically:

It is:

That places responsibility where it belongs: not only with the individual teacher, but across the professional-learning system.

Because the real measure of professional development is not what happens in the training room.

It is what eventually happens when the teacher walks back into the classroom.

Selected Research & Further Reading