Washington State Science & Engineering Fair (WSSEF)
The Washington State Science & Engineering Fair (WSSEF) is the premier state-level science competition for Washington students in grades 1 through 12. As an official ISEF-affiliated event, it offers participants the opportunity to present original research, compete for awards, and potentially qualify for the International Science and Engineering Fair.
Deadline
Mar 15, 2027
Eligibility
Grades 1–12
Format
Competition · In-Person
How to apply
Identify your county and register with regional fair
Review project requirements and safety guidelines
Submit registration forms and fees by deadline
Select your project category and prepare display
From the program’s own page — verified, not invented.
Key dates
Registration opens
Sep 1, 2026
Central Sound Regional Fair (grades 9–12)
Mar 6, 2027
Southwest Washington Virtual Fair (grades 9–12)
Mar 6, 2027
Eastern Washington Regional Fair (grades 6–12)
Mar 17, 2027
State Fair (grades 1–8)
Apr 2, 2027
State Fair (grades 9–12)
Apr 3, 2027
Don’t miss this deadline.Track Washington State Science & Engineering Fair (WSSEF) free — Wingman reminds you and syncs it to your calendar.