Imagine going to the doctor because you are not feeling well. Before you had a chance to describe your symptoms, the doctor writes out a prescription and says,
âTake two of these three times a day, and call me next week.â
âBut â I havenât told you whatâs wrong,â you say, âHow do I know this will help me?â
âWhy wouldnât it?â says the doctor. âIt worked for my last two patients.â (Christensen and Raynor, 2003)
Consider this hypothetical situation, which has been derived from Hill et al. (2016). You are the chair of the appointment panel who is looking to appoint a new headteacher for your school. The previous headteacher resigned after two years of GCSE results being well below expectations and a disappointing Ofsted inspection. At the end of the selection process you are left with two candidates, both of whom have quite different approaches to bringing about school improvement, and you have the âcasting voteâ on the selection panel. Candidate A already has experience of successfully âturning aroundâ two schools similar to your school, and has two very clear priorities. First to improve pupil behaviour by introducing a âzero toleranceâ approach to behaviour management and suspending and expelling pupils who do not conform. Second, to improve GCSE results as fast as they possibly can by focusing resources on Year 10 and Year 11. They plan to do this by reducing class sizes, allocating the most effective teachers to classes in Year 10 and Year 11, and introducing revision classes during the Easter break. Candidate A is very well dressed, self-assured, extremely confident in their own abilities, and says they can get the job done in two years and will then leave.
Candidate B â who is a deputy headteacher at a school not known to you â takes a different view on what is needed to bring about school improvement. Candidate Bâs priority is to focus on improving pupil behaviour by ensuring the curriculum offer is appropriate for different pupils, intending to develop relevant pathways for poorly behaved or performing pupils and does not intend to use a zero tolerance behaviour policy. Candidate B also wants to prioritise the creation of an all-through school by acquiring a primary school and creating a post-16 A-level provision. Candidate B also proposes to improve teaching in all year groups by introducing a substantial programme of continuing professional development, although this will only be done once both pupil behaviour has improved and a new school leadership and management structure has been implemented. Nevertheless, Candidate B acknowledges it may be at least three years before there is a major improvement in GCSE results. Candidate B, whilst being a confident and effective communicator, is far less charismatic and comes across as being very humble.
In making your decision as to whom to appoint as headteacher, what will you rely on? Experience, intuition, performance in the selection process or the advice of external experts? On this occasion, you decide to rely upon the advice of the external consultant on your selection panel, who from the very beginning of the appointment recommended the appointment of a so-called âsuper headâ who has a track record of turning around schools. This advice is consistent with your own intuition and âgut feelingâ, which suggests Candidate A might be the âcharismatic leaderâ needed by the school. However, you decide not to adopt an âevidence-basedâ approach as to whether Candidate Aâs or Candidate Bâs plans for the school are most likely to provide long-term success for the school. Unfortunately, this may be a major mistake.
Research by Hill et al. (2016) suggests that if you do appoint Candidate A, although after two years there may be impressive improvements in GCSE results, this will come at a significant cost to the long-term future of the school. School revenues decline as a result of a fall in pupil numbers due to a significant number of exclusions. After two years, Candidate A leaves, and GCSE results fall below their previous levels, as younger pupils who have been taught by less effective members of teaching staff move through the year groups. Hard-working, dedicated and long-serving teaching staff leave the school as they become despondent that things will only get worse as there are no resources to invest into the improvement of teaching and learning. The local community, whose hopes have been raised by the initial improvements in the schoolâs GCSE results, lose confidence in the new headteacher.
On the other hand, Candidate B is in all likelihood the better appointment. Although GCSE results may not improve rapidly, they do improve and continue to improve in years three, four and five of Candidate Bâs tenure as headteacher. A revised curriculum offer meets the needs of all pupils within the school, resulting in improved pupil behaviour, relatively few exclusions and stable school revenues. Although a number of staff leave the school on the appointment of Candidate B, those staff that do remain are committed and believe in the continued improvement and success of the school. Along with steady improvement in GCSE results, the acquisition of the primary school and the development of the sixth form provision increases the local communityâs confidence in the school as parents can see their commitment to their childrenâs education from ages 4 through 18 (Hill et al., 2016).
Disappointingly, in school leadership and management, ignoring the best evidence and making decisions by relying on personal experience, intuition or the popular ideas of so-called educational experts, consultants and others is a regular occurrence. As Lewis and Caldwell (2005) state, many leadership and strategic decisions are based on âevidence that is ill-informed, outdated, and incorrectâ (p. 182). So instead of basing a decision on evidence that is ill-informed, outdated and incorrect an alternative is evidence-based school leadership.
Evidence-based school leadership helps school leaders and managers of whatever level â aspiring leaders, heads of department, senior leaders, headteachers, chief executives, governing bodies and boards of trustees â develop practical answers to important school-based problems by making use of the best available evidence. Moreover, evidence-based school leadership helps school leaders and managers make âdecisions through the conscientious, explicit and judicious use of the best available evidence from multiple sources ⌠to increase the likelihood of favourable outcomesâ (amended from Barends et al., 2014: 2).
Chapter 2 will provide the full version of Barends et al.âs (2014) definition of evidence-based management and will help increase understanding of the âwhatâ and the âhowâ of evidence-based school leadership. In doing so, Chapter 2 will address the unnecessary distinction between evidence-based and âevidence-informedâ. Whereas, the remainder of this chapter will follow the advice of Sinek (2009) and âstart with whyâ and ask two questions: one, why is evidence-based school leadership needed; two, why is evidence-based school leadership needed now?