A group of parents in Gwynedd are keeping their children away from Ysgol Groeslon for the day to stage a protest at the condition of the school.
Gwynedd County Council has had to condemn parts of the building, which means that some classes will have to be taught - possibly at the same time - in the school hall.
The council says the move to the hall is an interim measure until a 'temporary classroom unit' for Year 3, 4, 5 & 6 pupils is installed in two weeks time.
More top news
The poorest children in Wales are falling behind in education and may never catch up with their classmates, a charity has warned.
Police say there has been a 50% increase in number of people from Wales seeking help to stop looking at sexual images of children online.
Two-time former champion Mark Williams has been knocked out of snooker's Dafabet Masters after losing 6-1 Kyren Wilson.