Police were called to the school about 10:45 a.m. Tuesday after the man, 18, reportedly touched a classmate inappropriately.
School officials and police were told the man touched a female classmate's shoulder and then tried to touch her breasts. She punched him before he made contact.
The man then allegedly barricaded himself in a classroom by pushing desks against the door.
Police allege he became hostile with them and resisted arrest. He also reportedly kicked a police sergeant in the thigh.
Police found a dagger with four-and-a-half inch blade in the man's backpack.
He was booked into jail for investigation of third-degree and fourth-degree assault, and carrying a weapon on campus.
He also received an emergency expulsion, school district spokeswoman DJ Jakala said.
More Local News Headlines
Snohomish family is part of school funding lawsuit Fair honors Granite Falls couple, but piglets hog limelight More support arrives to help solve Edmonds traffic problems Monroe seeks added revenue for upgrades to utilities A volunteer finds her niche at Domestic Violence Services Evergreen State Fair judging results CLASS REUNIONS Snohomish County nonprofits planning fundraisers
Our new comment system is not supported in IE 7. Please upgrade your browser here.