The service will be piloted at a number of schools in central London. If successful, it is expected to become a common feature in teachers' employment contracts across the country.
Cllr Tim Joiner, head of education on Westminster City Council, said the authority was launching the scheme in the hope of easing the borough's recruitment crisis. He said: 'If office workers have an emergency at home, they can sit at their desks and sort it out over the phone. Teachers, howver, are stuck in front of their classes. Those worries just add to any already stressful job'.