Longmont High SchoolSchool Calendar
2026-27 Academic Calendar
Key dates, holidays, and events for Longmont High School.
School at a Glance
Upcoming events & academic holidays2026-27 Academic Year
AUG
6
New Teacher Orientation
AUG
7
New Teacher Orientation
AUG
10
New Teacher Orientation
AUG
10
Non-Student Contact Day
AUG
11
Non-Student Contact Day
AUG
12
Non-Student Contact Day
AUG
13
Non-Student Contact Day (Split Day)
AUG
14
Non-Student Contact Day (Split Day)
AUG
17
Non-Student Contact Day
AUG
18
First Day of School for 1st-5th, 6th, & 9th Grades
AUG
19
First Day of School for 7th, 8th, & 10th-12th Grades
AUG
20
First Day of School for Kindergarten
AUG
24
First Day of School for Preschool
SEP
7
No School
Labor Day
OCT
16
Non-Student Contact Day
OCT
19
Non-Student Contact Day
NOV
23
No School
Thanksgiving Break
DEC
21
No School
Winter Break
JAN
4
Non-Student Contact Day, Split Day
JAN
18
No School
Martin Luther King Jr. Day
FEB
12
Non-Student Contact Day
FEB
15
No School
Presidents' Day
MAR
15
No School
Spring Break
APR
26
Non-Student Contact Day
APR
27
Non-Student Contact Day
MAY
26
Life Skills ACE Completion
MAY
27
Graduation - LaunchED Virtual Academy
MAY
27
Last Day of School for Students
MAY
28
Graduation - New Meridian HS, St. Vrain Virtual HS, and Universal HS
MAY
29
Graduation - Erie HS, Frederick HS, Longmont HS, Lyons HS, Mead HS
MAY
29
Graduation - Niwot HS, Silver Creek HS, and Skyline HS
MAY
31
No School
Memorial Day
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 Longmont 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
January 11, 2027 – February 12, 2027
WIDA ACCESS
Testing window
CO
January 11, 2027 – February 12, 2027
WIDA Alternate ACCESS
Testing window
CO
April 5, 2027 – April 23, 2027
CMAS
Testing window
CO
April 5, 2027 – April 23, 2027
CoAlt
Testing window
CO