More than 100 law enforcement officials were there dealing with five crime scenes.
According to the report, multiple shots were fired at Rancho Tehama School which is in Corning.
Authorities have recovered a semiautomatic rifle and two handguns after the shootings in the rural subdivision described on its website as a "quiet private country community" where "the people are friendly and the pace is relaxed".
The shooting broke out at a home in Tehama County, in Northern California and continued at the school, local authorities were quoted as saying.
One student was shot at the school and taken to a hospital.
Johnston said officials did not have an accurate count of the total number of people injured in the shooting that unfolded across at least seven locations.
The school has been cleared and children were moved to a safe location.
Students at Rancho Tehama Elementary are being evacuated to the Rancho Tehama Recreation Hall. He then stole a second vehicle and was shooting once again when two law enforcement officers killed him.
"The insane thing is that the neighbour has been shooting a lot of bullets lately, hundreds of rounds, large magazines", Flint said.
It's unclear who Flint had informed of the suspect's earlier actions. A woman driving the truck was also shot; all three are being treated. "They went around the community shooting at the schools!"