The primary school is in the village of Rhoose, approximately five miles outside Barry in the Vale of Glamorgan.
The school also has a nursery unit.
Police have said a car overturned outside the school and that casualties have been taken to hospital.
More top news
The largest advertising firm in the world and a global law company with offices in London were among the targets.
The Queen, Duke of Edinburgh and other members of the Royal Family have attended the funeral of Countess Mountbatten of Burma.
Shop owner Jel Singh Nagra changed the name of his North Tyneside store after threat of legal action from Sainsbury's