Arlington, which hosted the 2014 competition, also won first place in the 2013 contest.
Stanwood High School took the second-place trophy on Wednesday.
Other schools competing included Everett, Lakewood, Sedro-Woolley, Anacortes and Blaine.
The judges included Everett Herald arts and entertainment reporter Gale Fiege.
Arlington's video, filmed and edited by Chase Trinidad, featured "Northwest" music by Nirvana, Macklemore, Modest Mouse, Heart, the Kingsmen, Sir Mix-a-Lot and Jimi Hendrix.
See the winning lip dub at top.
Everett, Lakewood and Stanwood's videos are below.
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