Guest Blog 13: The known unknowns of teacher supply

The known unknowns of teacher supply

By Karen Wespieser

There is a lot written about the current teacher recruitment and retention ‘crisis’ but I think we need to hold our hands up and admit that there are some things that we empirically just don’t know… yet.

Last week, Schools Week ran an article headlined ‘Schools left with 10 per cent of posts unfilled’. Having worked on this topic for the past nine months, the story caught my eye. Has new data on vacancy rates been released by the DfE? Has another research organisation found a way of gathering this data? Have Schools Week reporters uncovered a vital statistic that the rest of us had missed? Well, not quite.

It turned out that the report was based on evidence that Marcus Bell, director of the DfE’s Teachers and Training Group, presented during a public event at the RSA back in November. This included a slide comparing vacancy rates for three local authorities: one where there were seven schools with at least 10% of teaching posts unfilled, one where there were 19 schools with at least 10% of teaching posts unfilled, and one where there were no schools with at least 10% of teaching posts unfilled.


So technically, yes, there are schools in which 10% of posts are unfilled, but not many. In fact, Marcus had used the data to illustrate this point:

This data needs further analysis… [it] doesn’t tell you very clearly that things are good or bad, it tells you that things are complicated and there’s more to look at.”

The Schools Week story also referred to the recent report by the National Audit Office (NAO) which again had found gaps in the evidence about teacher supply. Three of the NAO’s four recommendations included the suggestion that the DfE should collect, collate or share more evidence about teacher supply.

But then this is easier said than done. Good research takes time and it takes good data. Some analysis – like NFER’s report Should I stay or should I go – can be conducted using existing data but this is limited by what has been asked before. Collecting new data can give greater insight but it takes time to collect and requires willing participants to help. NFER is, however, pursuing both of these routes.

Our new project, Further evidence on teachers who stay or go, aims to understand better the experiences and intentions of teachers. The research will explore how engaged and supported teachers feel, track this over time and analyse how this relates to their intent to remain in the profession or to leave. Right now we are at the fieldwork stage, recruiting teachers who are planning to leave, or have recently left, the state sector to take part in short telephone interviews. If you can help, please sign up here.

The NFER research will be published before the summer holidays and can go into the box of ‘known knowns’, hopefully to influence and to inform policy and practice. But I suspect there will still be a good supply of known unknowns for other researchers, policy makers and journalists to tackle.

And don’t even get me started on the unknown unknowns!

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2 Responses to Guest Blog 13: The known unknowns of teacher supply

  1. Great analysis! A big fan of people going back to the original source. That’s why we try to be so upfront about where things are from. We have also looked at the incompleteness of information on teacher training here Really looking forward to seeing what your own work finds. Let us know!

    Liked by 1 person

  2. exitteaching says:

    Thanks Laura for your comments. I think maybe schools are not advertising their posts? This was my experience anyway. Unadvertised, locally filled, usually with long term agency staff. Makes everyone nervous.


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