STEM education: Measuring classroom changes when teachers change

One of the quiet problems in Nigeria’s education reform space is that success is often measured by attendance at workshops rather than transformation in classrooms. A training happens. Photos are taken. Certificates are issued. Reports are written. But months later, teaching looks the same.

The difference between symbolic reform and real reform is measurement that goes beyond inputs and focuses on outcomes. When teachers are genuinely empowered through Science, Technology, Engineering, and Mathematics (STEM) and project-based learning, three changes become visible almost immediately.

First, the student’s behaviour changes. Classrooms become noisier, but not chaotic. Students ask more questions. They argue with evidence. They collaborate. Teachers, who once struggled to keep students engaged, find that engagement is no longer forced. Second, teacher confidence shifts. Teachers begin to improvise. They adapt lessons. They stop relying entirely on prepared notes. They are willing to say, “Let’s find out together.” And, third, learning spills beyond the classroom. Parents notice students talking about school differently. Communities see schools as problem-solving hubs, rather than examination factories.

These are not abstract outcomes. They are observable, repeatable, and measurable when teacher development is done properly.

In this reflection, a case from a teacher training programme in Lagos would suffice. During a multi-month STEM-focused teacher development programme in Lagos, five facilitators observed a striking pattern. In the first month, teachers asked mostly technical questions. What is STEM? What is project-based learning? How do I align it with the curriculum? By the third month, the questions changed. Teachers asked about classroom dynamics. How do I manage group work? How do I assess projects fairly? How do I support weaker students without slowing others down? By the sixth month, the questions became reflective. Why did my students respond better to this project? Why did this activity fail? How do I redesign it?

This progression matters. It shows that teacher development is not just about skill acquisition. It is about mindset transformation. When teachers begin to reflect on learning rather than delivery, the system starts to shift.

In STEM education programmes and, by extension, innovation projects, there are reasons one-off trainings fail. Nigeria has no shortage of education interventions. What it lacks is continuity and sustainability of reforms in STEM education. Many teacher training initiatives fail because they are too short to change practice, focus on theory rather than classroom application, do not include follow-up support, and ignore the realities of overcrowded classrooms.

A teacher cannot unlearn years of examination-focused teaching in a weekend. Sustainable teacher development requires time, practice, feedback, and reinforcement. It requires teachers to test ideas, fail safely, and refine their approach. This is where project-based learning becomes a teaching method and a professional development tool. Teachers learn by doing, just like their students.
In light of these realities, the role of school leadership is germane. Even the most motivated teacher would struggle in an unsupportive environment. School leaders play a critical role in determining whether STEM and project-based learning thrive or die quietly.

In schools where principals encourage experimentation, protect teachers from punitive inspections, allocate time for collaboration, and celebrate learning outcomes and not just exam scores, teachers are far more likely to sustain innovative practices.

Conversely, in schools where leadership prioritises compliance over creativity, reform efforts often stall. Teacher development cannot be isolated from leadership development. Both must evolve together.

In STEM-learning and projects assessment is the silent gatekeeper. One of the biggest barriers to skills-focused education in Nigeria is assessment. As long as high-stakes examinations reward memorisation, teachers would feel pressured to teach to the test.

Project-based learning does not reject assessment. It reframes it. Effective assessment in STEM-focused classrooms includes observation of process and not just final answers, evaluation of collaboration and communication, reflection on failure and iteration, and real-world application of concepts.

Some Nigerian schools have begun experimenting with blended assessment models that combine traditional examinations with project portfolios. Early results suggest that students perform better overall, not worse. This challenges the fear that innovation compromises academic standards.

In the STEM sector or learning spaces, teachers should be seen as designers, not deliverers. The most powerful shift in STEM education happens when teachers see themselves as designers of learning experiences. This identity shift is transformative.

Designing learning means starting with a problem and not a topic, mapping skills and not just content, anticipating misconceptions, and creating opportunities for exploration. Teachers who adopt this mindset report greater professional satisfaction. Teaching becomes intellectually engaging again.

One science teacher in Ilorin puts it plainly, “I stopped feeling like a tape recorder.”

At this juncture, the economic case for teacher development should be given some attention. Closing Nigeria’s skills gap is not just an education issue; it is an economic imperative. Employers consistently report spending resources retraining graduates. Industries struggle to find talent with practical skills. Entrepreneurship remains necessity-driven rather than innovation-driven.

By investing in teacher development at the foundational level, Nigeria could reduce future workforce retraining costs, improve productivity, foster innovation, and strengthen global competitiveness.

Every naira invested in effective teacher development multiplies across generations of learners.

Then, unfortunately, there is the cost of doing nothing. The alternative is bleak but familiar, especially in a system where students graduate without applicable skills, teachers feel blamed but unsupported, employers lose confidence in local talent, and young people become disengaged. These are not distant risks. They are already happening. The skills gap is not widening because Nigeria lacks ideas. It is widening because implementation stops at policy documents.

So, what does effective teacher development look like in practice? Based on successful programmes and real-world experience, effective STEM-focused teacher development in Nigeria includes long-term engagement and not just workshops, classroom-based practice and feedback, peer learning communities, alignment with curriculum and assessment, support from school leadership, and recognition and career progression. When these elements come together, change becomes inevitable.

In all of this, there is a student who saw a different future. In a public school in Oyo State, a student, who once struggled academically, participated in a project on waste management. His group designed a simple recycling system for their school.

That student later told his teacher, “I did not know science was for people like me.”

That sentence captures what closing the skills gap truly means. It is not about producing a few exceptional students. It is about expanding who feels capable, included, and prepared.

In this regard, and more, teachers shape what students believe is possible. Students often internalise what schools signal about their potential. When learning is passive, students learn passivity. When learning is exploratory, students learn agency. Teachers are the signal. When teachers are empowered, students begin to believe they can shape their world.

From the foregoing, it could be deduced that Nigeria’s education challenges would not be solved by quick fixes or imported models. They would be solved by investing in the people who stand in front of classrooms every day. Teachers are not just implementers of reform. They are the reform.

By prioritising STEM and project-based learning as tools for teacher development, Nigeria could begin to close its skills gap from the inside out. Not through slogans. Not through pressure. But through sustained, human-centred change.

In conclusion, every meaningful transformation starts with someone choosing to do things differently, even when the system has not fully caught up. Across Nigeria, teachers are making that choice quietly. They are experimenting, learning, and adapting. If the system chooses to support them, the skills gap would not just narrow. It would eventually disappear.

 

.Dr. Obidike, STEM advocate and co-founder of STEMi Makers of Africa, writes from Lagos.