2026-27 Academic Calendar
Key dates, holidays, and events for Centennial High.
School at a Glance
Upcoming events & academic holidaysAUG
24
First day for K-12 students
AUG
27
First day for pre-K/RECC students
SEP
7
Schools and offices closed – Labor Day
SEP
21
Schools and offices closed – Yom Kippur
SEP
30
Schools close 3 hours early; No half-day Pre-K/RECC – Staff Professional Learning/Workday
OCT
16
Schools closed for students – Staff Professional Learning Day
OCT
28
Schools closed for students – Staff Professional Learning/Workday
NOV
3
Schools and offices closed – Election Day
NOV
23
Schools close 3 hours early; No half-day Pre-K/RECC – ES/MS Parent/Teacher Conferences, HS Staff Professional Day
NOV
24
Schools close 3 hours early; No half-day Pre-K/RECC – ES/MS Parent/Teacher Conferences
NOV
25
Schools closed for students – Parent/Teacher Conferences
NOV
26
Schools and offices closed – Thanksgiving Holiday
NOV
27
Schools and offices closed – Thanksgiving Holiday
DEC
9
Schools close 3 hours early; No half-day Pre-K/RECC – Staff Professional Learning/Workday
DEC
24
Schools and offices closed – Winter Break
DEC
25
Schools and offices closed – Winter Break
DEC
28
Schools closed – Winter Break
DEC
29
Schools closed – Winter Break
DEC
30
Schools closed – Winter Break
DEC
31
Schools closed – Winter Break
JAN
1
Schools and offices closed – Winter Break
JAN
18
Schools and offices closed – Martin Luther King Jr. Day
JAN
19
Schools closed for students – Staff Professional Workday
FEB
3
Schools closed for students – Staff Professional Learning Day
FEB
11
Elementary schools close 3 hours early; No half-day Pre-K/RECC – ES Parent/Teacher Conferences
FEB
12
Elementary schools close 3 hours early; No half-day Pre-K/RECC – ES Parent/Teacher Conferences
FEB
15
Schools and offices closed – Presidents Day
MAR
9
Schools closed for students – Eid al Fitr; Staff Professional Learning/Workday
MAR
22
Schools closed – Spring Break
MAR
23
Schools closed – Spring Break
MAR
24
Schools closed – Spring Break
MAR
25
Schools closed – Spring Break
MAR
26
Schools and offices closed – Spring Break
MAR
29
Schools and offices closed – Spring Break
APR
8
Schools close 3 hours early; No half-day Pre-K/RECC – Staff Professional Learning/Workday
MAY
17
Schools close 3 hours early; No half-day Pre-K/RECC – Staff Professional Learning/Workday
MAY
31
Schools and offices closed – Memorial Day
JUN
2
Schools close 3 hours early; No half-day Pre-K/RECC – Staff Professional Learning/Workday
JUN
7
Schools close 3 hours early; No half-day Pre-K/RECC – Staff Professional Workday; If inclement weather days are used, may become a full day
JUN
8
Schools close 3 hours early; No half-day Pre-K/RECC – Staff Professional Workday – Last Scheduled Day; If inclement weather days are used, may become a full day
JUN
9
May be used as inclement weather days
JUN
14
May be used as inclement weather days
JUN
18
Schools and offices closed – Juneteenth (observed)
Standardized Test Dates
Upcoming national, state, and school calendar dates that affect students at Centennial High.
National Tests
August 1, 2026 – November 30, 2026
ISEE — Fall Testing Season
August 3, 2026 – June 30, 2027
SSAT — Flex Testing
August 22, 2026
SAT — National
August 28, 2026
SAT — National
September 1, 2026
ACT — National
September 1, 2026
SAT — National
State Assessments
December 7, 2026 – January 22, 2027
MCAP — ELA
December 7, 2026 – January 22, 2027
MCAP — Mathematics
December 7, 2026 – January 22, 2027
MCAP — Government EOC
January 6, 2027 – March 3, 2027
WIDA ACCESS
March 29, 2027 – May 28, 2027
MCAP — Science (LS MISA)
March 29, 2027 – May 28, 2027
MCAP — Government