Vista High SchoolSchool Calendar
2026-27 Academic Calendar
Key dates, holidays, and events for Vista High School.
School at a Glance
Upcoming events & academic holidays2026-27 Academic Year
SEP
21
Professional Development Day (Remote Learning)
OCT
9
No School
Fall Break (No School)
NOV
23
No School
Fall Break (No School)
NOV
25
No School
Fall Break (No School)
DEC
18
End of 1st Semester
JAN
1
No School
Christmas Break (No School)
JAN
11
Start of 2nd Semester
JAN
18
No School
Martin Luther King Day (No School)
FEB
12
All District In-Service
FEB
19
Progress Reports
MAY
28
Graduation
Calendar 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 Vista High School.
National Tests
August 1, 2026 – November 30, 2026
ISEE — Fall Testing Season
Testing window
August 3, 2026 – June 30, 2027
SSAT — Flex Testing
Testing window
August 22, 2026
SAT — National
Test date
August 28, 2026
SAT — National
Registration deadline
September 1, 2026
ACT — National
Late registration deadline
September 1, 2026
SAT — National
Late registration deadline
State Assessments
March 23, 2027 – March 23, 2027
ACT with Writing — Test Window 1 - Standard Paper
Testing window
AZ
March 29, 2027 – April 23, 2027
ACT Aspire — Computer-Based
Testing window
AZ
March 29, 2027 – April 7, 2027
ACT Aspire — Paper-Based
Testing window
AZ
April 6, 2027 – April 6, 2027
ACT with Writing — Test Window 2 - Standard Paper
Testing window
AZ