 since 2022. Of those, 52 were deemed a critical risk, and safety measures have already put in place. Asked on BBC Breakfast whether buildings at those 52 schools "could have potentially collapsed", Mr Gibb said: "Yes, and that's why we took action." A further 104 schools with confirmed RAAC were deemed non-critical. Those schools had previously been told to develop contingency plans in case buildings needed to close. On Thursday, they were told to close buildings and rooms with RAAC unless they had safety measures in place - which could include propping up ceilings. Mr Gibb told BBC Radio 4's Today programme the guidance changed because "a beam that had no sign... that it was a critical risk and was thought to be safe collapsed". "What we discovered over the summer was a number of instances, in schools and in non-schools, in England and outside England, where RAAC that had been considered to be a low risk actually turn){kind=link}
Buildings at 52 schools in England were at risk of sudden collapse due to dangerous concrete, Schools Minister Nick Gibb has said.
Safety measures have since been put in place at those schools, which were deemed critical.
More than 100 others, which were previously thought to be less at risk, have now been told to close areas with the concrete unless they are made safe.
The new guidance follows the collapse of a beam that was thought to be safe.
Head teachers are now scrambling to make alternative plans days before the start of a new term.