Ros Atkins on... questions for government over RAAC

More than 150 schools successful England person been identified arsenic having a benignant of perchance unsafe factual - with galore buildings and classrooms closing until they tin beryllium made safe.

But however agelong volition that take? And however galore much schools could beryllium affected by RAAC (reinforced autoclaved aerated concrete)?

The BBC's Analysis editor, Ros Atkins, looks astatine the cardinal questions.