Calendar
During school improvement days, teachers, administrators, and staff members collaborate to enhance their abilities and develop the curriculum, ensuring they are fully equipped to support student success at all stages. MSD15 aims to provide students with a dynamic, mastery-driven learning experience, including hands-on workshops and collaborative planning.
Academic Calendar
2026-2027
Half Day School Improvement Days (SI):
September 23
October 30
November 18
January 27
March 25
September 23
October 30
November 18
January 27
March 25
April 21
Please note: For MSD15 PreK students, half-days are non-attendance
SCHOOL IMPROVEMENT DAY (Half Day Schedule)
K-5: 8:35am – 11:35am
6-8: 7:45am – 10:45am
Calendar
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday, May 31
Monday, June 1
Tuesday, June 2
Wednesday, June 3
Thursday, June 4
Friday, June 5
Saturday, June 6
Sunday, June 7
Monday, June 8
Tuesday, June 9
Wednesday, June 10
Thursday, June 11
Friday, June 12
Saturday, June 13
Sunday, June 14
Monday, June 15
Tuesday, June 16
Wednesday, June 17
Thursday, June 18
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District Calendar
Summer School (No School June 19)
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1912 Glen Ellyn Rd. Glendale Heights, Il
Friday, June 19
Saturday, June 20
Sunday, June 21
Monday, June 22
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District Calendar
Summer School (No School June 19)
-
1912 Glen Ellyn Rd. Glendale Heights, Il
Tuesday, June 23
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District Calendar
Summer School (No School June 19)
-
1912 Glen Ellyn Rd. Glendale Heights, Il
Wednesday, June 24
Subscribe to Calendar Alerts
District Calendar
Summer School (No School June 19)
-
1912 Glen Ellyn Rd. Glendale Heights, Il
Thursday, June 25
Subscribe to Calendar Alerts
District Calendar
Summer School (No School June 19)
-
1912 Glen Ellyn Rd. Glendale Heights, Il
Friday, June 26
Subscribe to Calendar Alerts
District Calendar
Summer School (No School June 19)
-
1912 Glen Ellyn Rd. Glendale Heights, Il
Saturday, June 27
Sunday, June 28
Monday, June 29
Tuesday, June 30
Wednesday, July 1
Thursday, July 2
Friday, July 3
Saturday, July 4
Calendar & Category Legend:
- BlackHawk Elementary BlackHawk Elementary
- Charles G. Reskin Elementary Charles G. Reskin Elementary
- District Calendar District Calendar
- G. Stanley Hall Elementary G. Stanley Hall Elementary
- Marquardt Middle School Marquardt Middle School
- Winnebago Elementary Winnebago Elementary
