Vancouver Police officer Patrick Johns secures an entry to Evergreen High School Wednesday December 12, 2012 in Vancouver, Washington. An Evergreen student is accused of bringing a gun to school and leaving it in a classroom, prompting a large police response and school lockdown. (Troy Wayrynen/The Columbian)

Vancouver Police officers confer outside Evergreen High School Wednesday December 12, 2012 in Vancouver, Washington. An Evergreen student is accused of bringing a gun to school and leaving it in a classroom, prompting a large police response and school lockdown. (Troy Wayrynen/The Columbian)

A Vancouver Police officer directs Evergreen High School students away from their classroom to an alternate location Wednesday December 12, 2012 in Vancouver, Washington. An Evergreen student is accused of bringing a gun to school and leaving it in a classroom, prompting a large police response and school lockdown. (Troy Wayrynen/The Columbian)

Vancouver Police officer Patrick Johns directs a motorist outside Evergreen High School Wednesday December 12, 2012 in Vancouver, Washington. An Evergreen student is accused of bringing a gun to school and leaving it in a classroom, prompting a large police response and school lockdown. (Troy Wayrynen/The Columbian)

Yvonne Gaylord, a driver trainer and safety person with Evegreen School District, directs bus drivers outside Evergreen High School Wednesday December 12, 2012 in Vancouver, Washington. An Evergreen student is accused of bringing a gun to school and leaving it in a classroom, prompting a large police response and school lockdown. (Troy Wayrynen/The Columbian)

A student walks away from Evergreen High School Wednesday December 12, 2012 in Vancouver, Washington. An Evergreen student is accused of bringing a gun to school and leaving it in a classroom, prompting a large police response and school lockdown. (Troy Wayrynen/The Columbian)

Cody Lint, 17, and Lauren Sherwin, 17, students at Evergreen High School, stand outside the school after being in lockdown for 3 hours Wednesday December 12, 2012 in Vancouver, Washington. An Evergreen student is accused of bringing a gun to school and leaving it in a classroom, prompting a large police response and school lockdown. (Troy Wayrynen/The Columbian)

Evergreen High School students walk from school after being in lockdown for 3 hours Wednesday December 12, 2012 in Vancouver, Washington. An Evergreen student is accused of bringing a gun to school and leaving it in a classroom, prompting a large police response and school lockdown. (Troy Wayrynen/The Columbian)

Corporal Doug Rickard with Vancouver Police walks from Evergreen High School Wednesday December 12, 2012 in Vancouver, Washington. An Evergreen student is accused of bringing a gun to school and leaving it in a classroom, prompting a large police response and school lockdown. (Troy Wayrynen/The Columbian)

Vancouver Police pack up their gear outside Evergreen High School on Dec. 12. A 15-year-old student pleaded guilty Dec. 18 to stealing his father’s combination rifle/shotgun and bringing it to Evergreen High School with plans to sell it to another student. Wyatt Michael Ball pleaded guilty to possessing a dangerous weapon on school grounds and theft of a firearm.

Vancouver Police officer Patrick Johns talks with students about getting back their personal belongins outside Evergreen High School Wednesday December 12, 2012 in Vancouver, Washington. An Evergreen student is accused of bringing a gun to school and leaving it in a classroom, prompting a large police response and school lockdown. (Troy Wayrynen/The Columbian)