Legacy staff, new hires, onboarding, and keeping faith with everyone a school recruits
Every international school has them. The colleagues who have been there for twelve, fifteen, twenty years. They remember when the secondary campus was a car park. They know which families have stayed through three children, which traditions matter and why, and who to call when something breaks. In a sector built on two-year contracts and constant movement, they are the closest thing a school has to roots.
This piece is about why those people matter, and why their value depends on a distinction schools rarely discuss out loud: the difference between caring for a school and owning it.
The case for legacy staff
International schools churn. Two-year contracts are the norm, and research on overseas-hire teachers links high turnover to weaker institutional stability, disrupted learning and, in some cases, deeper organisational dysfunction. When heads turn over quickly too, staff learn a survival skill: wait out each new initiative until the next leader arrives.
Legacy staff are the counterweight. They carry institutional memory. They induct new colleagues informally, often better than any formal programme. They hold relationships with families that took years to build, and they keep alive the traditions that give a community its identity.
Andy Hargreaves and Dean Fink call this conservation: building on the best of the past to create a better future. A school without it reinvents itself every three years and remembers nothing.
The risk: from custodian to owner
Here is the uncomfortable part. Longevity breeds a sense of ownership, and ownership cuts both ways.
Organisational research on psychological ownership is consistent on this. When people feel the organisation is partly theirs and they are involved in shaping change, ownership drives commitment and support. When change is done to them, and conflicts with what they feel is theirs, the same ownership turns territorial and becomes resistance.
In schools, it sounds like this:
- “We tried that years ago. It didn’t work here.”
- “That’s not how we do things.”
- “The new people don’t really understand this school yet.”
None of these is malicious. Each is a sincere attempt to protect something valued. But accumulated over years, they turn a school’s history into its ceiling.
This is not a criticism of long-serving staff. It describes what happens to any group of people, in any organisation, when the structures around them stop keeping the door open. That makes it a leadership and governance problem, not a personal one.
What leadership tenure tells us
The same dynamic applies to leaders, and here the research is clearer.
Allan Morrison’s 2025 study of 177 international school heads found average tenure has risen to 4.8 years, up from 3.7 a decade earlier. More importantly, it suggests leaders make the most lasting impact when they stay between seven and ten years. US research points the same way: the Wallace Foundation puts the minimum for meaningful impact at five to seven years, and a study of principals found their ability to hire teachers who stay keeps improving until around year seven, then levels off.
Seven to ten years is long enough to build something and see it through. It is not so long that one leader’s preferences become indistinguishable from the school’s identity. The best leaders, as Hargreaves and Fink argue, plan their own succession from the day they arrive.
There is no equivalent rule for teachers, and there shouldn’t be. An outstanding teacher in year twenty is a gift to any school. But the principle transfers. What matters is not how long someone has stayed. It is whether they are still contributing to where the school is going, rather than guarding where it has been.
Tenure over talent
Ownership often shows most clearly in internal promotion. I have seen highly qualified new staff, people with substantial leadership experience elsewhere, apply for an internal role and be told they need to stay longer before they can be considered. However gently it is delivered, the message is that time served counts for more than what someone brings.
I call this tenure over talent. It is rarely deliberate. Leaders who have spent twenty or thirty years in one school naturally trust what they have watched grow, and that instinct comes from genuine care for the place. But the effects are predictable:
- Talented new staff learn that ambition here means waiting, and the most capable take their ambition elsewhere.
- Leadership teams fill with people who share the same history, and so the same blind spots.
- The promotion pathway itself sends a signal about who the school belongs to.
None of this means long service should count for nothing. Deep knowledge of a school’s families, history and context is real expertise, and it deserves weight. The problem is treating it as a qualifying period rather than one factor among several. A fair internal process asks every candidate the same question: who is best placed to move this school forward?
Why hiring for “fit” makes it worse
Most schools still hire for fit. It feels sensible: find people who share our values and will settle in.
The problem is that fit is judged against the culture as it is, not as it needs to become. In practice it often collapses into a question no one says aloud: would the current staff like working with this person? An unstructured interview built on that question reproduces the existing staffroom. Fit hiring and legacy ownership reinforce each other. The school recruits people who won’t disturb it.
And fit is largely unknowable at interview anyway. You find out whether someone fits once they are actually inside the school, teaching your students, sitting in your meetings, meeting your parents.
The better question is about contribution. Organisational psychologist Adam Grant has argued that organisations wanting original thinking should hire for cultural contribution rather than cultural fit. For a school, that means two questions:
- Does this person genuinely share our mission and values?
- What will they add to our vision that we don’t already have?
Values are non-negotiable. Sameness is not.
The application letter is dead
For decades, the letter of application did a lot of quiet work. It showed effort, research and genuine interest: why you, why this school. A strong letter was a signal.
AI has removed that signal. Researchers Anaïs Galdin and Jesse Silbert studied tens of thousands of job applications before and after ChatGPT. Letters became longer and more polished, employers stopped trusting them, and it became harder to identify the strongest candidates. Every letter now aligns perfectly with your mission statement, often because it was written from it.
So schools need other evidence. Some places to look:
- Honest interviews. Tell candidates what the school is really like, including where it is stuck. Ask what they would challenge. Watch how they respond to the real school, not the brochure.
- Contribution tasks. Teach a lesson, respond to a real curriculum problem, take part in a department discussion. Look for what they add, not just whether they cope.
- Better references. Ask referees specific questions about what this person changed, built or improved, not general questions about reliability.
- The first year as the real interview. Make expectations about contribution to the vision explicit from induction, then review against them.
The stale school
This is where it comes together, and why it matters so much.
If leaders and boards don’t actively guard against it, a predictable pattern emerges. Legacy staff become owners rather than custodians. Hiring for fit adds people who won’t disturb the balance. Heads come and go too quickly to shift anything. The school stops moving, and nobody quite notices, because it still feels warm, stable and successful from the inside.
Meanwhile, the website still says innovative and future-ready. The recruitment pitch still sounds progressive. So a new teacher arrives expecting that school and finds a different one. They push. They hear “that’s not how we do things here.” They disengage, and two years later they leave. Turnover rises, which makes the school lean even harder on its long-serving staff, which strengthens ownership further. The loop closes.
Along the way, something unfair happens to the new teacher’s reputation. Their push for progress gets recast as the problem. They become “not a team player,” someone who “doesn’t understand our context,” or who is “trying to change everything too fast.” In most cases they were doing exactly what they were hired to do: bring experience and energy and help the school improve. The school recruited for contribution on paper, then treated contribution as disloyalty in practice.
In international schools this carries an extra cost that rarely gets said out loud. A teacher’s next job depends on references, and those references are written by the same leaders whose ways of working they questioned. Most leaders would never write an unfair reference deliberately. But the imbalance shapes behaviour regardless. Many new hires learn to stay quiet to protect their next move. Others leave early, carrying a cautious reference that undersells them. Either way, the school loses exactly the voices it needed, and the next cohort walks into the same pattern.
Leaders can break this by being explicit that constructive challenge is part of what a strong reference recognises, not something it quietly penalises.
The gap between the culture a school promises and the culture it lives is one of the most expensive things an international school can carry: in recruitment costs, in lost talent, and in reputation across a sector where teachers talk.
Leading for everyone
The leadership task is not choosing between legacy staff and new hires. It is making sure everyone gets what they believed they were buying into, while the school keeps moving forward.
Legacy staff bought into a community they helped build. They need to know their experience is valued and that change will not erase what they care about. New hires bought into the school described at interview and on the website. They need to find that school when they arrive. Boards and families bought into a vision. They need to see it lived, not just stated.
These promises only collide when leaders leave them to sort themselves out.
Supporting legacy staff
- Name the distinction. Talk openly about custodianship versus ownership. Make institutional memory a role people are valued for, not a veto they hold.
- Design change with them, not for them. Bring them in early, while ideas are still shapeable. This is exactly the condition under which ownership becomes support rather than resistance.
- Give experience new outlets. Mentoring, leading induction, piloting new approaches. Experience should open doors, not guard them.
- Be clear about what stays. Not every tradition is a barrier. Say explicitly what the school is keeping and why, so change does not feel like erasure.
Not letting down new hires
- Tell the truth in recruitment. Describe the school as it is and where it is trying to go. The right people are drawn to the honest version.
- Hire for values and contribution. Retire “fit” from the interview vocabulary.
- Give them a voice in year one. Fresh eyes are most valuable in the first months and fade fastest. Waiting until someone has “earned the right” to speak means hearing them after they have stopped noticing.
- Promote on talent, not time served. Open internal roles to everyone on the same criteria. If length of service matters for a role, say why, and say it before people apply.
Onboarding: where the two meet
Onboarding is where the school’s promises are kept or broken. Most international schools treat orientation as logistics: visas, housing, the handbook, a campus tour, an IT login. All necessary. None of it tells a new teacher how the school really works, or tells existing staff why the new person is there.
Strong onboarding does three things:
- Introduces culture, not just procedures. What the school values, how decisions are made, what has been tried before and why.
- Pairs new hires with legacy staff deliberately. Long-serving colleagues become guides into the culture; new hires bring them fresh perspective. Ownership gets shared instead of defended.
- Runs the whole first year, not the first week. Structured check-ins at six weeks, at the end of the first term and before contract decisions, each asking one thing: what is different from what you expected?
One approach I have used is to start with belonging rather than induction. Long-serving staff map the school’s story on a shared timeline: the moments it changed, what they built, and the times they felt most valued. New staff listen first. Then they are deliberately invited to name what they could contribute to the next chapter, and leaders follow up on those offers in the weeks that follow.
The order matters. Experienced staff feel their history has been honoured rather than overwritten. New staff are welcomed as contributors from day one, not as people who must wait their turn. Belonging comes first; contribution follows naturally from it.
That first-year question is the best early warning a school has. If new hires keep saying the school is not what they were sold, the problem is not recruitment.
Governing for renewal
- Boards: plan leadership succession deliberately, check whether the stated vision is actually lived, and look closely at why two-year leavers go.
- Leaders: plan your own exit. Seven to ten years is a guide, not a rule, but every leader should know what they are building toward and who comes next.
The best legacy any of us can leave a school is not that it stayed the way we made it. It is that it kept getting better after we’d gone.
References
- Doyle, A. M. (2011). Understanding the Job Satisfaction and Retention of Overseas-Hire Teachers. University of New England.
- Galdin, A., & Silbert, J. Working paper on LLMs and cover-letter signalling (Dartmouth / Princeton).
- Hargreaves, A., & Fink, D. (2005). Sustainable Leadership. Jossey-Bass.
- Morrison, A. R. (2025). Survival at the top: Factors impacting tenure and reasons for departure of the international school head. Journal of Research in International Education, 24(2), 162–183.
- Wallace Foundation / Leithwood & Seashore Louis. Learning from Leadership.
- Bailes, L., & Guthery, S. Principal tenure and teacher retention (reported in Education Week, 2022).
- Research on psychological ownership and organisational change (e.g. Wang & Han, 2020, Psychology Research and Behavior Management).
