Fletcher has worked as an educational management consultant for the last four years and was previously education chief at NALGO from 1990 to 1993.
LGA chief executive Brian Briscoe, said: `Neil's appointment from a strong short list will help the association to build on the foundations laid by the education team in the LGA's first year.
`Education, and the role of local government in it, is a key priority for the Association and Neil's experience and range of skills will complement the LGA's senior team'.
Fletcher was also a member of the Inner London Education Authority (ILEA) for 11 years from 1979 and its leader between '87 and '90 when he moved out of politics.
He was also chairman of the former Association of Metropolitan (AMA) during his political career.
Fletcher said: 'I am delighted to be appointed to this crucial national role and look forward to working with all parties in local government to promote local democracy and local discretion in education.
'It is vital that education plays its full part in addressing the corporate agenda facing local communities.'