Why education's workforce crisis is a retention failure, not a recruitment one, and how to fix it
Education pours effort into the front door, recruiting and training new teachers, while the back door stays wide open. The profession loses people at both ends of the career, and no recruitment campaign can outrun a retention failure. Here is how to close the back door, across early childhood, primary and secondary.
For system, school & people leaders · Aotearoa New Zealand & Australia · 15 minute read
THE SHORT VERSION
The teacher shortage is real, and the response has been overwhelmingly front-door: more initial teacher education places, scholarships, fast-tracked visas for overseas teachers, and relief cover to plug the gaps. This paper argues that the shortage is, at its core, a retention problem wearing a recruitment problem's clothes, and that the system is pouring new teachers in the top while losing them out the bottom faster than it can train them. The durable fix is to close the back door: to keep, support and grow the teachers already in the profession, applying one skills-first operating model across early childhood, primary and secondary.
There is a particular pattern to the loss, and it is the critical point of this paper. Education haemorrhages people at both ends of a career. It loses new teachers in their first few years, before they ever become great, and it loses experienced teachers and would-be leaders to burnout and a development path that quietly closes. You cannot recruit your way out of either.
PART ONE · THE PROBLEM
The headline gaps are serious, and worst where they are hardest to fix. In New Zealand, the secondary shortfall is the persistent one, with the Ministry warning the gap could run into the thousands, and the lived reality already stark: a 2024 sector survey found 56 per cent of schools had teachers working outside their specialist subject because they could not find qualified staff, the highest figure since the survey began in 1996. In Australia, the federal government has projected a shortfall of more than 4,000 secondary teachers. And the workforce is ageing, with schools relying on teachers well past traditional retirement age to keep classes covered.
Notice the shape of the secondary problem in particular. It is not a generic headcount gap that any new graduate can fill. It is a specialist gap, in the sciences, technology, mathematics, te reo Māori and languages, and these subjects are not interchangeable. A surplus of one specialism does nothing for a shortage in another. You cannot recruit a physics teacher who does not exist. When schools cannot find one, they put a willing non-specialist in front of the class or cancel the subject altogether, and students lose access to the very subjects the economy most needs.
Faced with this growing gap, almost all the effort has gone on the front door: training more teachers, marketing the profession, recruiting from overseas, and covering the holes with relievers. These efforts are reasonable, and none should stop. But they are front-door fixes to a back-door problem, and the back door is wide open. The profession loses people at both ends of a career.
At the start of their careers, the evidence is sobering. Across Australia and New Zealand, a recent survey of secondary teachers found fewer than half were reasonably confident they would still be teaching in three years, and more than a quarter were actively considering leaving within that time, citing stress and workload. An Australian survey of early-career teachers found only 18 per cent were certain they would stay for a career. The honest nuance is that registration data shows actual early-career attrition is lower than the most alarming headline claims, but the signal is unmistakable: a large share of new teachers are one hard year away from the door, and whether they stay is decided in their first few years by the support they get, or do not.
At the other end, experienced teachers and aspiring leaders are leaving or never stepping up. Workload is named in study after study as the reason good teachers quit, and the path into leadership has narrowed to the point where fewer want the job and new leaders themselves struggle to last. A profession that loses its novices before they flourish and its experienced people before they lead is hollowing out in the middle, exactly where capability should accumulate.
Fast-tracking residency for overseas teachers is a bandage, not a solution.
Chris Abercrombie, President, PPTA Te Wehengarua (2025)
That is the verdict on the front-door strategy from the profession itself. Overseas recruitment and relief cover, the education equivalents of agency staffing, plug an immediate hole, but they do nothing to fix the reasons people leave, and they cannot supply the specialists or the local leaders a school actually needs. The system runs harder and harder on recruitment while the back door swings.
The open back door looks different across the phases of schooling. Solving it means treating these as three expressions of one problem.
Qualified ECE teachers and educators. The undervalued, high-churn end.
In workforce terms early childhood resembles aged care: a large, fragmented sector of community and private providers, historically the lowest paid, with high churn that current supply initiatives have barely touched. Reviews have found New Zealand lacks a coherent ECE workforce strategy, that recruitment and retention issues are largely unaddressed, and that nobody is even tracking where churn is worst or why. Qualification targets keep rising while the workforce to meet them keeps leaving. Demand for teachers who can work bilingually, in te reo Māori and Pacific languages, is especially strong and especially unmet. This is the clearest case in the sector that hiring more people into a leaky service is not a strategy.
Generalist registered teachers. Where early-career attrition bites.
Primary supply is, on the official projections, the part of the system closest to balance, even heading toward surplus in places. But that aggregate hides the real issue: this is where early-career attrition does its damage. Primary teachers are generalists carrying enormous and growing workloads, and it is in the first few years, navigating classroom management, behaviour and the gap between training and reality, that they are most likely to walk. The question for primary is rarely whether enough people enter. It is whether the people who enter are supported well enough, early enough, to stay and become the experienced teachers the system depends on.
Subject-specialist teachers. The sharpest, most stubborn shortage.
Secondary is where the shortage is most acute and most resistant to recruitment, because it is specialist. The number of suitably qualified New Zealand-trained applicants per classroom position has fallen to historic lows, and even as overseas applications flood in, the gap between applications received and suitable applicants is wide. The result is out-of-field teaching at record levels and subjects being cancelled. You cannot fix this by recruiting harder for teachers in general; you can only fix it by retaining the specialists you have and deliberately growing more, including by supporting existing teachers to retrain into shortage subjects. That is a development problem, not a hiring one.
| Dimension | Early childhood | Primary | Secondary |
|---|---|---|---|
| The workforce | Qualified ECE teachers and educators | Generalist registered teachers | Subject-specialist teachers |
| The defining pressure | Low pay, high churn, fragmented providers | Workload and early-career attrition | Specialist shortages you cannot simply hire |
| How the back door shows up | Constant churn in teacher-led services | New teachers leaving before they hit their stride | Out-of-field teaching and cancelled subjects |
| What's missing | A reason and a structure to stay | Induction, mentoring and a development path | Grow-your-own specialist and leadership pipelines |
The same forces run through every phase. Workload is the one named most often, in the time it demands and the intensity of modern classrooms. Behaviour and the complexity of student need have risen. Insecure, fixed-term employment pushes early-career teachers out. Pay and status have slipped relative to other graduate careers. And the ageing of the workforce removes experienced people at the top faster than the system grows replacements. In New Zealand there is an equity dimension too: Māori and Pacific peoples are underrepresented in the teaching workforce relative to the learners they serve, and a system that cannot retain and grow its own people cannot build a workforce that reflects its classrooms.
Read that list and notice what it is not. It is not, at root, a failure to attract people into teaching. It is a failure to support, develop and keep them once they arrive. Those are fixable. They are simply not being seen.
The single root, across every phase: most schools and systems cannot see the capability they already hold. Who is teaching out of field and could be supported to specialise, which early-career teachers are thriving and which are at risk, whose registration and certification is current, who is ready to step into middle or senior leadership, all of it sits scattered across rosters, appraisal folders, certification records and the memories of a few senior people. You cannot retain, develop, deploy or grow capability you cannot see. And in teaching, as in nursing, that capability has to be evidenced to a professional body to keep the right to practise.
THE TURN
Recruitment will always matter, and a system short of teachers must keep attracting and training them. The argument is that recruitment alone is a losing strategy, because it pours new teachers into a profession they leave faster than they can be replaced. The lever the whole sector has underinvested in is the one that actually decides the size of the workforce: retention, focused on keeping, supporting and growing the people already in it.
That reframes the problem from a supply question into a capability question. Overseas recruitment and relief cover treat the workforce as something to acquire from outside; a skills-first model treats it as something to keep and grow from within. In education that approach carries a particular payoff: the same record of skills, registration and certification you build to develop and retain teachers is the record you need to assure quality and meet professional-body requirements. The compliance burden and the capability engine become one system. That is what TalentJam is built to do.
PART TWO · THE SOLUTION
TalentJam is a skills intelligence platform built on a continuous loop. Skills feed Performance, Performance feeds Growth, and Engagement runs through all of it. The four disciplines apply in every phase; what changes is which one carries the most weight. Together they are the machinery for closing the back door: keeping the teachers you have, and growing the ones you need.
TalentJam builds a living capability profile for every teacher and leader: subjects and specialisms, skills, registration and certification currency, leadership readiness, in one place rather than scattered across folders. That lets a school or system see what it has actually got: who is teaching out of field and could be supported to specialise, where the genuine subject gaps are, who is close to ready for leadership, and where the single points of failure sit. It turns certification tracking from an audit chore into a live, trustworthy record, and it is the direct answer to a system that makes workforce decisions without being able to see the workforce it holds.
Capability profiles / Subject & specialism mapping / Registration & certification currency / Leadership readiness / Succession visibility
Education already runs on a professional growth cycle: appraisal, observation, the move from provisional to full certification. TalentJam makes that native and genuinely developmental, with light, regular, skills-anchored check-ins and verifiable certification support, rather than a compliance exercise nobody connects to growth. This matters most exactly where the back door is widest: the first few years. New teachers who get real induction, mentoring and feedback stay and flourish; those left to sink do not. Equipping middle leaders to develop their people, rather than only manage them, is among the highest-return retention investments a school can make.
Induction & mentoring / Professional growth cycle / Certification support / Middle-leader enablement
Workload and burnout are the main drivers of the back door, and they rarely arrive without warning. TalentJam's engagement capability gives schools low-friction listening and structured recognition that surfaces a struggling or disengaging teacher while there is still time to act, rather than reading it in a resignation letter at the end of term. Recognition and feeling valued are what teachers consistently say they most lack. Protecting the wellbeing of experienced staff is not a soft extra; it is how a school holds on to the people whose departure does the most damage, and avoids the relief-cover spiral that follows.
Pulse listening / Recognition / Workload & burnout signals / Retention of experienced staff
This is the pillar that closes the back door for good, because the two hardest gaps, shortage-subject specialists and school leaders, cannot reliably be bought. They have to be grown. TalentJam maps real pathways: a generalist or out-of-field teacher supported to retrain into a shortage subject; a classroom teacher developed along a route to middle and then senior leadership and the principalship; a teacher aide supported toward full qualification. Each step is tied to the specific capability and certification it requires. That rebuilds the specialist and leadership pipelines the system has been trying, and failing, to import, and it gives a profession that loses people for lack of a future something concrete to stay for.
Leadership pathways / Retraining into shortage subjects / Aspiring-principal pipelines / Representative workforce
Most schools already own fragments of this: an appraisal system, a certification register, an LMS, a wellbeing survey (that not everybody acts on). They sit in silos, and capability falls through the gaps. The loop is the point. Capability data shows who could specialise or lead. Performance and support keep people, especially early on. Engagement catches the burnout that drives attrition. Growth builds the specialists and leaders the market cannot supply, which cuts the dependence on overseas hiring and relief cover, which reduces the load on everyone who stays, which feeds the next turn. Each pillar makes the others work harder, and the compounding effect is what finally closes the back door rather than just widening the front one.
THE SYSTEM OPPORTUNITY
For a ministry or a state education system, the steward of the whole teacher workforce, this is not one option among several. It is the lever that matters most. The global pool of teachers every developed education system is now chasing is finite, overseas recruitment is, in the sector's own words, a bandage, and no amount of front-door effort closes a back door this wide. A system cannot import or train its way to stability while it keeps losing people at both ends. It can only close the gap by keeping and growing the workforce it has.
A system that can see capability across all its schools, support teachers through the years they are most likely to leave, retain its experienced people, and grow its own specialists and leaders along visible pathways, reduces its dependence on the very fixes that are failing it. It also gains what no recruitment drive can buy: the data to plan its workforce, subject by subject and region by region, on the basis of capability it actually holds rather than vacancies it is forever chasing. That is a longer build than a marketing campaign, and a bigger conversation than a single school. It is also the only one that bends the curve.
IN PRACTICE
Consider a secondary school with out-of-field teaching in two departments, an ageing leadership team, a couple of promising early-career teachers quietly struggling, and a constant, losing battle to recruit specialists. Nobody can say with confidence where the school's real capability sits. Here is how the loop changes the trajectory.
From the front door to the whole pipeline
→ Term one. Every teacher gets a capability profile, and the school sees its workforce on one screen: subjects and specialisms, who is teaching out of field, whose certification is current, who is ready for leadership, and that two senior leaders will retire within two years with no identified successor.
→ Term two. The two early-career teachers get structured mentoring and regular check-ins instead of being left to cope, and an engagement signal flags a head of department heading for burnout in time to act. Certification and appraisal run from one trusted record rather than three.
→ Term three. A capable generalist is placed on a supported path to retrain into one of the shortage subjects, and a head of department is developed along a route toward senior leadership. The school starts growing the specialists and leaders it could never reliably recruit.
→ Year two. Out-of-field teaching is falling, the early-career teachers have stayed and are thriving, leadership succession is being managed rather than feared, and the reliance on relievers and overseas hiring is easing. The school is building its workforce, not just advertising for one.
The same loop kept the new teachers, protected the experienced ones, and began growing the specialists and leaders the school most needed. That is the point of closing the back door with one model rather than crowding the front with three.
THE TIMING
The pressures on the education workforce are converging, and none is easing. The workforce is ageing at the top, the early-career attrition stays stubbornly high, the specialist subjects only get harder to staff, and every developed country’s system is competing for the same finite pool of teachers while the ethics and limits of overseas recruitment come into sharper focus. The research consensus has shifted decisively: the priority should be retaining the teachers already in the profession, not only attracting new ones. The systems still pouring everything into the front door are running to stand still.
The schools and systems that come through the next decade in better shape will not be the ones that recruited the hardest. They will be the ones that could see, keep and grow the capability they already had, supporting teachers through the years they are most likely to abandon the profession, and building their own specialists and leaders, while the rest of the sector fights over a pool that keeps shrinking. That is an advantage no labour market can take away.
Keep your teachers. Grow your own. Close the back door.
TalentJam gives schools and education systems a live picture of the capability inside their workforce, and the loop to retain, develop and grow it, so the answer to a vacancy is no longer only to recruit. To see what it looks like for you, visit www.talentjam.io to book a walkthrough.
SOURCES & NOTES
PPTA Te Wehengarua Secondary School Staffing Survey (2024 and 2025): out-of-field teaching, applicants per position, and overseas recruitment. New Zealand Ministry of Education Teacher Demand and Supply Planning Projections (2024 and 2025) and 2026 reporting: secondary and primary supply gaps and ageing-workforce data. Australian Government Department of Education projections: secondary teacher shortfall. Australian Education Union State of Our Schools (2025): early-career teacher retention intentions. Education Perfect survey of trans-Tasman secondary teachers (2026): stress, burnout and confidence in staying. Monash University and BERA analysis (2024 to 2025): workload, intention to leave, and the case for prioritising retention over attraction. AITSL Australian Teacher Workforce Data (2025): registration-based attrition. Reviews of New Zealand early childhood teacher supply and workforce strategy (2025), and New Zealand Ministry of Education Budget 2025 material on registration, certification and leadership pathways. Several figures are projections, modelled estimates or survey-based intentions and are described as such; the most alarming early-attrition claims are contested by registration data, and are presented with that caveat. Figures cited as ranges or as approximate reflect variation across published studies, methods and dates.