It is believed a shotgun was used in the attack by a student, who is now in custody, authorities report.
One student has been shot at a high school in Taft, Calif., a community in the southern San Joaquin Valley.
Kern County sheriff's spokesman Ray Pruitt also says a suspect is in custody and is believed to be a student.
The shooting was reported about 9 a.m. today at Taft Union High School. A television report said a second person was shot but refused treatment.
The sheriff's spokesman says a wounded student was flown to a hospital in Bakersfield.
Pruitt says it's believed a shotgun was used in the attack.
Taft is a community of about 7,000 some 120 miles northwest of Los Angeles.
23ABC News of Bakersfield, Calif. reports it received phone calls from people inside the school
hiding in closets and the local county sheriff's department was going
"room-by-room to secure the school." Parents have been instructed to pick up their children at the school's football field, the station reports.