Green River High SchoolSchool Calendar
2025-26 Academic Calendar
Key dates, holidays, and events for Green River High School.
School at a Glance
Upcoming events & academic holidays2025-26 Academic Year
JUL
29
School Offices Open
AUG
19
First Day of School
OCT
16
End of 1st Quarter
DEC
17
End of 2nd Quarter
MAR
12
End of 3rd Quarter
MAY
26
Last Day of School
JUN
11
Last Day School Offices Open
Partner TipEarly dismissal days and parent-teacher conferences are often updated 2 weeks in advance. Check back regularly to stay ahead of the schedule!
Standardized Test Dates
Upcoming national, state, and school calendar dates that affect students at Green River High School.
National Tests
August 7, 2026
SAT — National
Registration deadline
August 11, 2026
SAT — National
Late registration deadline
August 14, 2026
ACT — National
Registration deadline
August 22, 2026
SAT — National
Test date
August 28, 2026
SAT — National
Registration deadline
September 1, 2026
ACT — National
Late registration deadline
State Assessments
September 8, 2026 – October 2, 2026
WY-TOPP Interim — Fall - ELA
Testing window
WY
September 8, 2026 – October 2, 2026
WY-TOPP Interim — Fall - Math
Testing window
WY
January 12, 2027 – February 5, 2027
WY-TOPP Interim — Winter - ELA
Testing window
WY
January 12, 2027 – February 5, 2027
WY-TOPP Interim — Winter - Math
Testing window
WY