The blaze was burning in a canyon between the school and Alisha Drive. San Diego police said the wildfire forced the evacuation of at least 10 homes and 100 residents.
The San Diego Unified School District said students at Boone Elementary School were ordered to stay in their classrooms but the remaining students and staff at Morse High School were evacuated. At Fulton Elementary School, students were taken to the school auditorium.
The flames burned close to the canyon's rim, dangerously close to homes on both sides and singed fence lines in back yards, according to Maurice Luque of San Diego Fire Rescue. There was a large amount of dry vegetation in the canyon to burn the fire.
The winds were not blowing very hard, but the dry brush and low humidity that prompted a red-flag warning this week helped the fire burn, Luque said.
Super Scoopers as well as Copter 1 and 2 were credited with helping put out the blaze, as well as 100 firefighters on the ground -- mostly in the canyon. About 12 acres burned. There were no reports of injuries and no structures lost.
One person was injured. Luque said they fell and had to be transferred to a hospital for treatment. One firefighter was also injured with minor burns to his leg.
Fire officials said someone started the fire, but they are not calling it arson.