The vehicle, a Bolero, met with the accident near Chitai temple about 10 km from Almora, Superintendent of Police P Renuka Devi told PTI on phone.
The incident occurred at around 9 am and the vehicle was ferrying eleven persons, mostly teachers, to a rural school.
Three teachers died on the spot while three others succumbed to injuries at a hospital, Devi said. Five injured were rushed to the Almora base hospital from where some were referred to a higher centre in Haldwani, she said.
It is not yet certain what led to the accident, she added.