Lyons Middle/Senior High SchoolSchool Calendar
2025-26 Academic Calendar
Key dates, holidays, and events for Lyons Middle/Senior High School.
School at a Glance
Upcoming events & academic holidays2025-26 Academic Year
JUL
6-9
Advanced Placement Summer Institute (APSI)
JAN
2
Non-Student Contact Days
APR
27
Non-Student Contact Day
MAY
1
Late Start/PLC Day
MAY
20
Life Skills ACE Completion
MAY
21
Last Day of School for Students
MAY
21
Graduation - LaunchED Virtual Academy
MAY
22
Graduation - New Meridian HS, St. Vrain Virtual HS, and Universal HS
MAY
23
Graduation - Erie, Frederick, Longmont, Lyons, Mead, Niwot, Silver Creek, and Skyline High Schools
MAY
25
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!