Following a challenge from the then Schools Minister David Miliband, the Trust began working with headteachers to define personalising learning. Professor David Hargreaves held a series of workshops with 200 headteachers and identified the nine gateways to personalising learning. A series of five conferences with ASCL (then SHA) followed to examine the gateways. After each conference, David Hargreaves produced a pamphlet with case studies from schools. By the time of the last conference in January 2006, the nine gateways had been clustered into four groups: deep learning, deep experience, deep support and deep leadership. The National Conference in 2006 focused on these four deeps and consequently a number of schools restructured their leadership teams on this basis.