Killer dust asbestos still present in schools
Asbestos was widely used in the building industry in the 1960s and 70s but it was banned in the UK in 1999, after a link was established to a number of different lung diseases.
Figures seen by the BBC suggest asbestos is still present in nearly nine out of ten schools in the UK - higher than previous official estimates.
It can be managed safely if it is left undisturbed but there have been calls for urgent action to make schools safer, as Tim Muffett reports.