From Teaching Assistant to Teacher: Why Schools Are Growing Talent From Within

Teacher recruitment continues to be one of the biggest challenges facing schools and trusts across the UK. Training targets have been missed for several years in a row, and retention pressures mean many schools are competing for an increasingly limited pool of experienced teachers.

At the same time, the demands of teaching are evolving. Rising pupil needs, growing expectations, and increasing complexity in classrooms mean schools require highly skilled professionals who understand both their role and the community they serve.

In response, many school leaders are reconsidering a key question: where will the next generation of teachers come from?

For an increasing number of schools and trusts, the answer may already be inside their own buildings.

The case for developing talent internally

Across the education sector, there is growing recognition that support staff already working within schools represent a valuable and often overlooked talent pool.

Teaching assistants, cover supervisors, and other support professionals often build strong relationships with pupils, develop a deep understanding of the school environment and demonstrate many of the qualities needed to become excellent teachers.

Rather than relying solely on external recruitment, many schools are beginning to adopt a “grow your own” approach, identifying promising staff members and supporting them on a pathway into teaching.

This strategy shifts the focus from simply filling vacancies to building a sustainable pipeline of future teachers.

Why the approach works

There are several reasons why developing teachers from within can be highly effective.

First, staff who already work in a school understand its culture, routines and expectations. They know the pupils, the community and the values that shape the school environment. This familiarity can make the transition into teaching smoother and more successful.

Second, investing in internal development can improve retention. When staff feel supported in developing their careers, they are more likely to remain within the organisation and build long-term careers there.

There is also a practical financial benefit. Recruitment processes, supply cover and onboarding can make replacing a single teacher costly. Supporting existing staff to progress into teaching roles can often be a more sustainable investment.

Creating the right pathways

Of course, developing teachers internally does not happen by accident. Schools and trusts that successfully adopt this approach typically build clear and structured development pathways.

This might include identifying potential future teachers among support staff, offering mentoring or coaching opportunities, and providing access to teacher training routes such as apprenticeships or school-based programmes.

Professional development also plays a critical role. When schools foster a culture of learning, where staff collaborate, share expertise and develop their practice together, it creates an environment where talent can naturally grow.

Importantly, this approach benefits more than just the individuals progressing into teaching. It helps build stronger teams, improves continuity for pupils and strengthens the overall stability of the workforce.

A long-term investment in the profession

Growing teachers from within is not a quick fix to the recruitment crisis. Supporting someone to move from a support role into a qualified teaching position can take several years.

However, the long-term benefits are significant.

Schools develop teachers who are already embedded in their communities and aligned with their values. Professional knowledge remains within the organisation, and staff see a clear future for their careers.

In a challenging recruitment landscape, this approach offers something increasingly valuable: stability, continuity and a sustainable pipeline of talent.

Looking ahead

As schools continue to navigate recruitment pressures, strategies that focus solely on external hiring may become increasingly difficult to sustain.

Developing internal talent provides a practical and forward-thinking alternative. By recognising potential within their existing workforce and investing in clear development pathways, schools and trusts can begin to build the next generation of teachers from within their own communities.

For many settings, the future of teacher recruitment may not lie in searching further afield, but in supporting the talented people already working in their schools to take the next step in their careers.

Sometimes the next great teacher isn’t someone waiting on a job board; they’re already supporting pupils in the classroom today.

If your school or trust is exploring ways to strengthen its future teaching workforce, developing internal talent can be a powerful place to start. At NextGen Teachers, we work closely with schools and specialist provisions to support sustainable staffing strategies and connect settings with dedicated education professionals.