The Guardian (p4) reports that they also plan jointly to assist councils which are struggling to succeed with adoption. One idea is to set up support teams to help them learn from best practice elsewhere.
The plans were agreed at a private conference in Liverpool last week - as a group of MPs called on the Department of Health to send 'hit squads' into councils performing poorly on adoption.
Under the directors' plan, they will review their departments' adoption services and advise their councils to strengthen arrangements and increase investment in them.
Moira Gibb, vice-president of the Association of Directors of Social Services, said: 'The action we have agreed to take ... will go some way to dispelling the myths and letting emerge a more balanced understanding of this terribly delicate and sensitive area of work.'