With the imperative placed on schools in recent years to improve, the leade
rship of educational change has increased in significance. The research rep
orted here explored and analysed the change processes in 32 schools in Sout
h Wales that have made significant changes to improve pupil achievement. Va
rious triggers initiated the improvement journey and the schools faced nume
rous challenges. Although the improvement journey was variously configured,
there appeared to be sequential stages: pre-acceleration, acceleration and
post-acceleration. The organizational leadership needs in those different
stages were diverse and in schools where change had been successfully engin
eered, leadership was enacted differently with diverse themes emerging in t
he various phases. The findings have important implications for the leaders
hip of change in a range of institutions such as those in the public and vo
luntary sectors which have multiple and often conflicting objectives, a mul
tiplicity of stakeholders and are staffed by professionals. The paper illus
trates the changing nature of leadership in the journey of organizational c
hange which may help to explain the absence in the literature of the charac
teristics or the key actions that are the essence of good leadership. The p
aper concludes by modelling the dimensions of improvement that the leader m
ust influence at an institutional and individual level to bring about educa
tional change. These dimensions are effectiveness, reflective capability an
d adaptive capability.