Identities of the suspect and victims have not been revealed by authorities.
The school is located in Rockford, a town of about 500 people located a few miles south of Spokane, WA.
Parents are being asked to meet at the Freeman Store next to the high school, KHQ reporter Peter Maxwell said. He says he saw the student at school with a duffel bag. The student claims the alleged shooter was his friend and passed around notes that said he was planning on "doing something dumb" that would get him killed or sent to jail.
Law enforcement says the threat at Freeman HS has been eliminated and the kids are being accounted for.
One high school junior said "at least four" shots had been fired. He wouldn't release how many people were injured Wednesday or their conditions.
Ambulances and a Lifeflight helicopter were sent to the school.
Hospital officials would hold a news conference on Wednesday afternoon to provide more information, she said. Annie Baxter, whose two daughters attend Freeman Middle School across the street from the high school, told The Spokesman-Review that children were running into buildings when she pulled up to the school area about 10:15 a.m. The lockdown was lifted nearly an hour later.
U.S. Rep. Cathy McMorris Rodgers tweeted, "Awful - just hearing of the shooting at Freeman HS near Spokane".
Several school districts in the Inland Northwest went into lockdown the shooting.