Thirty children are being treated in hospital after two buses collided in Stanley in County Durham, including one boy who suffered serious facial injuries.
Fifty children from two local schools were travelling on the buses when the crash occurred.
The two bus drivers were taken to different hospitals for treatment, while a 12-year-old boy was airlifted to hospital after suffering serious facial injuries.
Twenty seven other children are having treatment for minor injuries.
More top news
Tonight turning foggy in places but frost free
Governor says Article 50 fears not Bank actions to blame for pound's plunge, but admits markets may yet have "mistaken" Brexit impact.
Conservative MP Zac Goldsmith read out a statement on his decision to force a by-election in protest at new runway at Heathrow Airport.