Diamond Ranch HighSchool Calendar
2026-27 Academic Calendar
Key dates, holidays, and events for Diamond Ranch High.
School at a Glance
Upcoming events & academic holidays2026-27 Academic Year
OCT
7
Shortened Day for High School Students
OCT
15
Elementary School Parent Conferences
NOV
2
Professional Development Day
NOV
11
Veterans Day
NOV
23
Schools Not in Session
NOV
26
Thanksgiving Holidays
DEC
17
Shortened Day for High School Students
DEC
18
Shortened Day for All Students
DEC
21
Winter Break
JAN
18
Martin Luther King Jr. Day
JAN
19
Professional Development Day
FEB
8
Lincoln's Birthday Observance
FEB
15
Washington's Birthday Observance
FEB
17
Shortened Day for High School Students
MAR
11
Elementary School Parent Conferences
MAR
29
Spring Break
MAY
27
Shortened Day for High School Students
MAY
28
Shortened Day for All Students & Last Day of School
MAY
31
Memorial Day
JUN
1
Teacher Work Day
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 Diamond Ranch High.
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
September 22, 2026
SAT — National
Late registration deadline
September 25, 2026
SAT — National
Score release
September 29, 2026
ACT — National
Late registration deadline
October 1, 2026 – October 30, 2026
PSAT 8/9 — Fall
Testing window
State Assessments
March 1, 2027 – June 30, 2027
CAASPP — Statewide Window
Testing window
CA
School Milestones
October 1, 2026 – October 15, 2026
Private School Affidavit Filing Window
Other
CA