The figures, obtained through freedom of information requests, show the ratio of education welfare officers to pupils in Oldham is one to 18,246. But the London Borough of Kensington and Chelsea has one officer to every 505 pupils.
In the Isle of Wight, the ratio of educational pyschologists to pupils is one to 8,282. But in the London Borough of Wandsworth, it is one to every 1,217 pupils.
Earlier this year, a report by the Children's Services Professionals' Network warned tight public finances and the move to integrated services threatens the future of education specialists.
Councils told CYP Now integrated teams are increasingly carrying out work that was the preserve of the education welfare service.
A spokesman for East Sussex Council, which has the third lowest ratio with one member of staff to every 7,633 pupils, said: "Although we have 11 education welfare officers, the team also contains various officers with specialist roles working with schools, families and young people."
But the numbers of educational psychologists have been affected by changes to training structures. Colin Peak, director of children's services in the Isle of Wight, explained: "Like many local authorities, we have found it difficult to recruit educational psychologists.
"The island is making up for this by hiring qualified and skilled locum educational psychologists."
