Most September vacancies are predictable by spring, because retirements, resignations and timetable changes rarely arrive without warning. To improve teacher hiring decisions, audit your staffing data and define each role clearly before any vacancy goes live. Get those two steps right, and the advert has far less work to do.
Plenty of schools skip straight to writing the advert, then wonder why the shortlist looks thin. At OTJR Online, we see the same pattern across primary and secondary vacancies. An advert is rarely the problem, and the planning behind it usually is.
This guide covers the data to check first, the reasons recruitment stalls, and how planned hiring compares with reactive hiring. You’ll also see how to warm up teachers before a role even opens. Let’s get into details.
Smart Staffing Decisions Begin Long Before Schools Post a Vacancy
Many hiring mistakes in schools happen weeks before any advert goes live. By the time a vacancy appears, the shortlist is already influenced by choices nobody wrote down.
Still, three early steps change that outcome.
1. Start With Turnover and Staffing Data
Begin with numbers you already hold: leavers by subject, time to fill, and roles you advertised twice. Those figures show where your education recruitment process breaks.
In practice, teacher retention data tells you as much as vacancy numbers, because hiring and retention are the same problem seen from two ends. Official school workforce statistics show 9 in 10 teachers remain teaching in state-funded schools in England one year after qualification.
So compare your own leaver pattern against that national baseline before you plan anything. When one department loses staff every July, the fix sits in school culture rather than in a new advert.
2. What Does the Role Really Need?
The role needs a short list of what the post-holder must do in their first week. Many job descriptions name duties, yet few name the outcome the role exists to produce.
Before you write anything, define your hiring criteria with the head of department who’ll manage the person. Agree which skills you won’t bend on and which you’ll train after appointment.
From there, you’ll write the advert from those criteria instead of last year’s version. Getting the subject split right at this stage is usually what separates a strong shortlist from a weak one. We’ve watched schools shorten their shortlisting simply by naming the subject split clearly (vague adverts attract vague applications from the wrong people).
3. Bring Senior Leaders Into the Education Recruitment Process
Once the criteria are agreed, bring your leadership team in before the vacancy reaches the finance meeting. Senior staff hold the budget details that decide what you can offer a candidate.
If you’ve ever lost a shortlisted teacher to a slow approval, you’ll know how that feels. One meeting in February can settle pay, timetable and start date for September. School districts and MATs both work this way, and the pattern holds in a single primary too.
Why Does Teacher Recruitment So Often Go Wrong?
Schools post adverts before agreeing what the role requires. Teacher shortages take the blame, but the national picture tells a different story
NFER teacher labour market research reports that teachers were less likely to leave the workforce last year compared to any year since 2010/11 (outside of the pandemic years). Fewer leavers mean teacher recruitment and retention are steadier than staff room talk suggests. So the gap sits in your teacher recruitment strategy rather than in the labour market.
In particular, three faults turn up consistently, and all of them start inside the school:
- Adverts Written Last Minute: Rushed postings copy an old job description and miss the subject split your timetable now needs. Candidates rule themselves out when the advert reads like paperwork. Write the advert from your agreed criteria rather than last year’s version, and have the head of department read it before it goes live.
- No Agreed Shortlisting Standard: Two leaders scoring the same application will rank it differently without shared criteria. That disagreement then surfaces at interview, once the panel has already lost a week. Before the advert goes live, sit both scorers down with the criteria and score one sample application together.
- Silence Between Advert and Offer: Leave a strong applicant waiting a fortnight and a quicker school takes them. Set a maximum response time of 48 hours for every candidate who meets the criteria. That single rule protects your offer rate without any extra spend.
None of these faults needs extra budget, and all three can be settled before your next vacancy. Hiring strategies tend to fall over on basics like these rather than on anything clever.
School Hiring Strategy: Reactive Hiring Versus Planned Hiring
Schools that plan recruitment ahead of need fill vacancies sooner and avoid the costly decisions that come with panic hiring. The table below sets the two approaches side by side:
| What Changes | Reactive Hiring | Planned Hiring |
|---|---|---|
| Time to fill | Several weeks, sometimes longer | Shortlist ready within two to three weeks of the vacancy |
| Candidate pool | Whoever happens to be free | Teachers from your pipeline: trainees, supply staff, and warm contacts |
| Cost | Supply cover plus agency fees | Advert plus a few hours of staff time |
| Decision quality | Fit judged under pressure | Criteria agreed months earlier |
Planned hiring wins on every row, mostly because supply cover and agency fees fall away. Among the teacher recruitment strategies open to you, it’s the easiest strategy for schools working to a tight budget.
Reactive hiring will still happen, so keep it for genuine emergencies. Everything else earns the lead time.
Building a Pipeline Before Teacher Vacancies Open
With a clear plan agreed, the next step is making sure strong candidates already know your school. Here’s a breakdown of the steps for your convenience.
Warm Contacts: Trainees, Supply Staff, and Early Messages
Pipelines sound corporate, and in a school they simply mean keeping warm contact with teachers who might apply later. Start with people who’ve already walked your corridors, including trainees on placement and supply teachers who covered well.
One message in May about September roles costs nothing and can do more than a paid advert. Recruiting teachers this way spreads the effort across the year instead of piling it into July.
What Your Online Presence Tells Candidates
Beyond that, your social media accounts do quiet recruitment work every week. Plenty of teachers browse jobs from their phone on a Sunday evening, and your feed is often the first thing they check. Photos of students presenting their own projects show what exam results never can:
- The classroom energy behind every finished project
- The mess that comes with real learning
- Collaboration between students working side by side
In fact, a feed that only celebrates grades tells candidates the school values outcomes over process. That may not be the impression you want to give.
Your website picks up where social media leaves off. Potential candidates read it before they read your pay scale, so give them clear information on:
- Professional development routes for every career stage
- Mentoring support that helps new staff settle
- Career progression paths within your school
That detail helps attract people who plan to stay. Word of mouth then closes the loop, because educators talk to each other. A well-run interview day travels fast across a London borough.
All of this leaves you with a shorter list of teachers who are already interested when a vacancy opens. Plus, a pipeline built across the year costs less than a July advert blitz and delivers candidates who already know what they are applying for.
Make Your Next Hiring Decision Your Best One
Good hiring decisions come from the weeks before the advert rather than the week after it. Specifically, your data, your criteria and your leaders settle most of the outcome.
So pick one vacancy coming up next term and run those checks in order. Then, compare that shortlist with your last one and the gap speaks for itself.
OTJR Online offers practical recruitment strategies for schools and trusts across England. Talk to OTJR Online to review your staffing plan and get help hiring the right teacher for your next vacancy.