St. Charles High SchoolSchool Calendar

2026-27 Academic Calendar

Key dates, holidays, and events for St. Charles High School.

School at a Glance
Upcoming events & academic holidays
2026-27 Academic Year

AUG

24

First day of school for students

AUG

31

First day of school for prek students

OCT

12

Columbus Day/Indigenous Peoples Day

OCT

27

End of first quarter

OCT

28

Second quarter begins

OCT

30

Two-hour early dismissal for students

NOV

3

Election Day

NOV

6

No School
Schools closed for students only

NOV

8

Diwali/Dipawali begins

NOV

9

Report cards posted

NOV

11

Veterans Day

NOV

24

Two-hour early dismissal for students

NOV

25

Thanksgiving holiday break

DEC

3

Two-hour early dismissal for students

DEC

5

Hanukkah begins

DEC

7

Interims posted

DEC

18

Two-hour early dismissal for students

DEC

21

Winter break

JAN

1

New Year’s Day

JAN

18

Dr. Martin Luther King, Jr.'s birthday observed

JAN

21

Second quarter/first semester ends

JAN

22

Semester break

JAN

25

Third quarter/second semester begins

FEB

7

Ramadan

FEB

8

Report cards posted

FEB

12

No School
Schools closed for students only

FEB

15

Presidents Day

FEB

26

Two-hour early dismissal for students

MAR

1

Interims posted

MAR

10

Eid al-Fitr

MAR

23

Two-hour early dismissal for students

MAR

24

Spring break

MAR

26

Good Friday

MAR

29

Easter Monday

APR

5

Third quarter ends

APR

6

Fourth quarter begins

APR

19

Report cards posted

APR

22

Passover begins

APR

26

No School
Schools closed for students and teachers

MAY

6

Two-hour early dismissal for students

MAY

10

Interims posted

MAY

14

Last day of school for seniors

MAY

17

Eid al-Adha

MAY

31

Memorial Day

JUN

7

Two-hour early dismissal for students

JUN

8

Two-hour early dismissal for students

JUN

9

Last day of school for students

JUN

10

Last day for teachers

JUN

11

Inclement weather make-up day 2

JUN

18

Juneteenth observed

JUN

21

Report cards posted
View Full 2026-27 Calendar
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 St. Charles High School.

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 22, 2026

SAT — National

Test date

August 28, 2026

SAT — National

Registration deadline

September 1, 2026

ACT — National

Late registration deadline

September 1, 2026

SAT — National

Late registration deadline
+76 more national tests this school year

State Assessments

December 7, 2026 – January 22, 2027

MCAP — ELA

Testing window
MD

December 7, 2026 – January 22, 2027

MCAP — Mathematics

Testing window
MD

December 7, 2026 – January 22, 2027

MCAP — Government EOC

Testing window
MD

January 6, 2027 – March 3, 2027

WIDA ACCESS

Testing window
MD

March 29, 2027 – May 28, 2027

MCAP — Science (LS MISA)

Testing window
MD

March 29, 2027 – May 28, 2027

MCAP — Government

Testing window
MD
See the full national test & school calendar