Headteacher turnover hit a five-year high in 2025. Here is what the numbers say.

Of the 1,200 secondary schools in Praecip’s active index, 144 appointed a new substantive head teacher during the 2025 academic year. That is a 12% annualised turnover rate, nearly one school in eight, and the highest single-year figure we have measured since the pandemic-affected 2020 cycle. A churn rate that high is not noise; it is a signal about how the sector hires, governs and parts with the people it puts in charge.

A five-year high, and where it clusters

The turnover is not spread evenly. It concentrates in mid-tier private schools, while the top decile and the bottom decile both run leadership tenures above eight years. The extremes are stable for opposite reasons: the strongest schools retain heads because the post is prized, and the weakest retain them because few candidates are competing for the job. It is the crowded middle, where ambition meets thin governance, that does the churning.

What the numbers say about exits

• One in eight schools changed head: 144 of 1,200 indexed secondary schools made a new substantive appointment in 2025.
• Early exits skew involuntary: where a head leaves inside three years of appointment, the exit is twice as likely to be involuntary as voluntary.
• The handover year costs results: the post-handover year is, on average, a school’s weakest UCE result in the prior five.

That last finding is the one with consequences for pupils rather than administrators. A leadership change is not a neutral event on the calendar; it tends to coincide with the cohort that posts the school’s weakest recent result. For a parent, a school that has just changed head is a school in a predictable dip, and worth a question or two before committing.

Governance, not pay

We talked to nine outgoing heads, four incoming heads and two board chairs. The recurring theme was governance, not pay. Heads who left early described an unclear remit, a board that managed by surprise, or a founding owner who never fully delegated the authority that came with the title. Almost none led with salary as the reason they left.

I was hired to run the school and then never allowed to. The owner kept the keys to every decision that mattered. I lasted two years; the next head will last about the same unless the charter changes.

The schools that retain their leaders are not always the ones that pay best. They are the ones that hire on a clear charter, a defined remit, a real delegation of authority, and an agreed set of measures, and then review the head against it rather than against the mood of a board meeting. Clarity, it turns out, retains better than cash.

What it means for boards and parents

For boards, the lesson is to fix the governance before blaming the candidate: a head who fails inside three years is often a symptom of an unclear remit, not a hiring mistake. For parents, a recent change of head is a reason to ask how the handover is being managed, whether the new head has a clear mandate, and what the school is doing to protect the next exam cohort from the dip the data predicts.