When I wrote a blog recently about the significant level of head teacher vacancies recorded by both TeachVac and the DfE vacancy site during August, I promised to look into the possible size of the pool of school leaders able to step up to fill headships in the primary sector. (Feeling the Strain 31^st August 2020)

The new arrangement for viewing the DfE Statistics of the School Workforce in November 2019 made this more of a challenge than in the past. Indeed, I have still not fathomed whether it is possible to add in age groupings as a variable in the composite table searchers are allowed to create from the data? This is an important variable in answering the question about leadership pool of talent since deputy and assistant heads in some age groups may be expected to be lacking in experience in post sufficient to consider promotion to a headship.

Even better would be details about age and length of service in post, something provided way back in the 1990s, but not seemingly available now without a specific data request. Perhaps the teacher associations might like to consider this issue in their next evidence to the Pay Review Body the STRB).

Historically, most head teachers are appointed from the ranks of deputy head teachers, although, as some small primary schools don’t have a deputy, a number of assistant heads or even teachers with a TRL have been appointed to headships in the past. More recently, deputy heads in secondary schools have been moved across to primary schools in the same Academy Trust in order to fill vacancies for primary head teacher posts.

Looking at the data for the last four years from the School Workforce Census, the number of full-time deputy heads in the primary sector has declined from 11,563 in 2017/18, to 10,729 in 2019/20. The number of part-time deputy heads during the same period has, however, increased from 1,062 to 1,236. Nevertheless, the size of the pool has not grown. This is despite the number of schools remaining almost constant during the same period, the total altering only from 17,191 to 17,178.

Assuming some 2,000 primary head teacher vacancies each year, with 25% being taken by existing head teacher changing schools, this would create a demand for 1,500 first time head teachers each year. Assuming ten per cent of the 12,000 deputy heads are too new in post to consider promotion and a further 10% are too old to be still interested in headship, the remaining 10,000 or so leaves a generous margin of possible applicants.

However, other considerations then come into play; type of school – infant, junior or primary; organisation – maintained or academy; religious affiliation or none – Church of England, Roman Catholic, Methodist, Jewish, Greek Orthodox; Sikh, Muslim; size of school – one form entry to four form entry or larger?

All these variables can affect the size of the possible pool of interested applicants. A further wrinkle is the time of year a vacancy is advertised. Historically, 50% of vacancies appear in the January to March period and are the easiest to fill as that is when the majority of applicants are job hunting. TeachVac www.teachvac.co.uk has detailed information on how schools advertising for a head teacher fare, and how many have to re-advertise. Each year, a report is published in January.

We shall be watching the current trends with interest.