A school coach carrying at least 15 secondary school children "lost control" and crashed through a garden wall, police have said.
The vehicle ploughed into the property on the A3078 near Tregony Hill, Cornwall, at about 8:30 GMT.
The driver, in his 70s, was airlifted to hospital after the crash. One child was treated at the scene.
Drivers have been advised to avoid the scene, near the turn-off for Portloe, "until further notice".
Emergency road closure: We’re currently working with @DC_Police to close part of the A3078 from Tregony Hill to Bessy Beneath. We advise all drivers to avoid the area until further notice pic.twitter.com/RSTsSkDsLN— CORMAC (@CORMACltd) November 18, 2019
PC Jason Mollard told the BBC officers had received reports that "a coach had lost control and had gone through a wall and into a garden".
Vehicle recovery and bus replacement are at the scene.