Officers responded Tuesday at the school shortly after 8 a.m.
Multiple agencies responded to the scene, according to CBS affiliate KOIN. Sixty police and sheriff's units were on hand, as well as 19 medical personnel. A LifeFlight helicopter landed in a nearby field, according to the station.
The station reports tactical efforts have concluded. The situation is stabilized, according to police.
KOIN reports a student still inside the 2,800-student school tweeted just after 9 a.m. that while some students had been evacuated, "most" are on lockdown. One student reportedly told a parent the shooting began in the school's gymnasium, though police have not been able to confirm specific details.
TV news showed students being led from the school with their hands on their heads.
Freshman Daniel DeLong, 15, said while waiting after the shooting that he saw a physical education teacher at the school with a bloodied shirt.
"I'm a little shaken up," DeLong said. "I'm just worried."
He said he was texting friends to make sure they were all okay. "It just, like, happened so fast, you know?" DeLong said.
Freshman Morgan Rose, 15, said she was hunkered down in a locker room with another student and two teachers. "It was scary in the moment now knowing everything's okay," she said.
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