Los Alamos HighSchool Calendar
2026-27 Academic Calendar
Key dates, holidays, and events for Los Alamos High.
School at a Glance
Upcoming events & academic holidays2026-27 Academic Year
OCT
7
K-8 Parent-Teacher Conferences
OCT
9
Fall Break
NOV
3
No School
Election Day
NOV
11
No School
Veterans Day
NOV
25
Thanksgiving Break
DEC
18
End of 1st Semester
DEC
21
Winter Break
JAN
4
Staff Planning
JAN
5
First Day of 2nd Semester
JAN
18
No School
Martin Luther King, Jr. Day
MAR
18
K-8 Parent-Teacher Conferences
MAR
19
K-8 Parent-Teacher Conferences
MAR
22
Spring Break
APR
23
Inclement Weather Day
MAY
22
LAHS Graduation
MAY
28
Last Day of School
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 Los Alamos 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
August 28, 2026
SAT — National
Registration deadline
September 1, 2026
ACT — National
Late registration deadline
September 1, 2026
SAT — National
Late registration deadline
September 4, 2026
SAT — National
Score release
State Assessments
March 15, 2027 – April 30, 2027
NM-MSSA — SLA
Testing window
NM