Washougal High School was placed on a partial lockdown this morning.
The move was in response to teachers and administrators trying to find a missing student.
It is the second time this week that the school has been on lockdown. On Tuesday, a lockdown was administered after a threatening note was found in a school restroom.
A partial lockdown is when students stay in the classrooms, said Les Brown, technology director for the district.
The lockdown began at 9:35 a.m. and lasted approximately 25 minutes until the student was located.
Classes have now resumed.