The head of private school Epsom College has been found dead along with her husband and seven-year-old daughter in a property on school grounds.
Emma Pattison, 45, her husband George, 39, and their daughter Lettie were found dead at 01:10 GMT on Sunday.
Surrey Police said they were called to the private school by the South East Coast Ambulance Service.
Police said they were confident it was an isolated incident "with no third-party involvement".
An investigation is being carried out to establish the circumstances of their deaths.
Detective Chief Inspector Kimball Edey said: "On behalf of Surrey Police, my team, and I, I first want to express my sincerest condolences to the friends and family of Emma, Lettie and George, as well as to the students and staff of Epsom College, for their tragic loss.
