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September 2026
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Sunday, August 30
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
High School Calendar IB Biology Field Trip #1 (EWC)
All Day
Monday, August 31
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Arts Activities Calendar Boston Brass Band Residency
All Day
Day Calendar C-6-6
All Day
High School Calendar IB Biology Field Trip #1 (EWC)
All Day
Middle School Calendar MS Yearbook Photos
All Day
High School Calendar Unlocking the Liberal Arts: An Evening with 6 Highly Selective U.S. Colleges
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Tuesday, September 1
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Arts Activities Calendar Boston Brass Band Residency
All Day
Day Calendar D-7-7
All Day
High School Calendar IB Biology Field Trip #1 (EWC)
All Day
High School Calendar IB Biology Field Trip #2 (EWC)
All Day
Middle School Calendar MS Yearbook Photos
All Day
High School Calendar G11 Family University Night Webinar
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Wednesday, September 2
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Arts Activities Calendar Boston Brass Band Residency
All Day
Day Calendar E-8-8
All Day
Middle School Calendar G8 Outdoor Education Group 2 (EWC)
All Day
High School Calendar IB Biology Field Trip #2 (EWC)
All Day
Middle School Calendar MS Yearbook Photos
All Day
Arts Activities Calendar Boston Brass Concert
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Thursday, September 3
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Day Calendar F-1-1
All Day
Middle School Calendar G8 Outdoor Education Group 2 (EWC)
All Day
High School Calendar IB Biology Field Trip #2 (EWC)
All Day
High School Calendar MAP Testing Grades 9 & 10
All Day
Middle School Calendar MS Back to School Night
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Friday, September 4
Day Calendar A-2-2
All Day
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Middle School Calendar G8 Outdoor Education Group 2 (EWC)
All Day
High School Calendar MAP Testing Grades 9 & 10
All Day
Arts Activities Calendar New York City Opera Workshop @ ISB
All Day
Multi Division and Holidays Welcome Back Event for Staff (Full Campus Closure from 5pm-8pm)
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Saturday, September 5
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Athletics Calendar U15 Tennis In-House Singles Event
All Day
Athletics Calendar Panther Run Series #2
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Sunday, September 6
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Monday, September 7
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Day Calendar B-3-3
All Day
Middle School Calendar MS MAP Testing
All Day
Parent Community Calendar Thai Parents Welcome
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Tuesday, September 8
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Day Calendar C-4-4
All Day
Middle School Calendar MS MAP Testing
All Day
High School Calendar HS Academics for New HS Parents and Grade 9 Parents
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Wednesday, September 9
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Day Calendar D-5-5
All Day
Middle School Calendar G8 Outdoor Education Group 3 (EWC)
All Day
High School Calendar HS Academics for Returning HS Parents Grades 10-12
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Arts Activities Calendar Tri-M Induction Ceremony
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Thursday, September 10
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Day Calendar E-6-6
All Day
Middle School Calendar G8 Outdoor Education Group 3 (EWC)
All Day
High School Calendar Thai Medical School Presentation
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High School Calendar HS Back to School Night
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Friday, September 11
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Day Calendar F-7-7
All Day
Middle School Calendar G8 Outdoor Education Group 3 (EWC)
All Day
High School Calendar Grades & HAL Update
All Day
Arts Activities Calendar IASAS Dance Invitational @ ISM
All Day
Athletics Calendar IASAS Varsity Invitational - Soccer @ ISB
All Day
Athletics Calendar IASAS Varsity Invitational - Volleyball @ ISM
All Day
Athletics Calendar ISB Varsity Cross Country Invitational @ ISB
All Day
Elementary School Calendar ES Parent Engage
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Arts Activities Calendar Bolshoi Theatre of Belarus
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Saturday, September 12
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Arts Activities Calendar IASAS Dance Invitational @ ISM
All Day
Athletics Calendar IASAS Varsity Invitational - Soccer @ ISB
All Day
Athletics Calendar IASAS Varsity Invitational - Volleyball @ ISM
All Day
Athletics Calendar ISB Varsity Cross Country Invitational @ ISB
All Day
Athletics Calendar U11 Soccer Festival @ BPS (U11 Black Teams + U11 Boys Gold Team)
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High School Calendar SAT
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Athletics Calendar U13 A & B Girls/Boys Basketball @ ISB
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Sunday, September 13
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Arts Activities Calendar IASAS Dance Invitational @ ISM
All Day
Athletics Calendar IASAS Travel Day
All Day
Monday, September 14
Day Calendar A-8-8
All Day
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Multi Division and Holidays Tentative Science Consultant on campus
All Day
High School Calendar Senior Class Photo
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Tuesday, September 15
Multi Division and Holidays Application Portal Opens for 2027-2028 Academic Year
All Day
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Day Calendar B-1-1
All Day
Middle School Calendar G8 Outdoor Education Group 4 (EWC)
All Day
Multi Division and Holidays Tentative Science Consultant on campus
All Day
Middle School Calendar MS Parent Engage
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High School Calendar IB Matters for Parents of Current IB Students G12
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Arts Activities Calendar Deborah Colker Dance Co. Workshop @ ISB
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Wednesday, September 16
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Day Calendar C-2-2
All Day
Middle School Calendar G8 Outdoor Education Group 4 (EWC)
All Day
Multi Division and Holidays Tentative Science Consultant on campus
All Day
Thursday, September 17
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Day Calendar D-3-3
All Day
Middle School Calendar G8 Outdoor Education Group 4 (EWC)
All Day
High School Calendar Peace Day
All Day
Multi Division and Holidays Tentative Science Consultant on campus
All Day
Arts Activities Calendar ISB Peace Day Assembly
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High School Calendar ISB Global University Fair
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Athletics Calendar Panther Swim Kickoff Gala & Dinner
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Friday, September 18
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Multi Division and Holidays ISB Professional Day for Teachers (No School for Students)
All Day
Athletics Calendar JV Invitational @ SSIS - Volleyball and Soccer
All Day
Saturday, September 19
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
High School Calendar HS Service Saturday
All Day
Athletics Calendar JV Invitational @ SSIS - Volleyball and Soccer
All Day
Athletics Calendar U15 Tennis Doubles Event
All Day
Sunday, September 20
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Monday, September 21
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Day Calendar E-4-4
All Day
Tuesday, September 22
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Day Calendar F-5-5
All Day
High School Calendar HS IB Matters for Gr11 Parents
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Wednesday, September 23
Day Calendar A-6-6
All Day
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Middle School Calendar G8 Outdoor Education Group 5 (EWC)
All Day
Parent Community Calendar Japanese Parents' Committee Meeting
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High School Calendar G11 Digital Readiness Check for PSAT
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High School Calendar G9 Family University Night
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Thursday, September 24
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Day Calendar B-7-7
All Day
Middle School Calendar G8 Outdoor Education Group 5 (EWC)
All Day
Arts Activities Calendar HS MUN "In House" Conference and Showcase
All Day
Arts Activities Calendar MS Band Music in the Wild Service Trip
All Day
High School Calendar House Council Carnival Dance
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Friday, September 25
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Arts Activities Calendar Bangkok International Choir & Strings Festival
All Day
Day Calendar C-8-8
All Day
Middle School Calendar G8 Outdoor Education Group 5 (EWC)
All Day
Athletics Calendar ISB U15 Basketball/Tennis Invitational
All Day
Arts Activities Calendar MS Band Music in the Wild Service Trip
All Day
High School Calendar Senior Treats
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Saturday, September 26
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Arts Activities Calendar Bangkok International Choir & Strings Festival
All Day
Athletics Calendar ISB U15 Basketball/Tennis Invitational
All Day
Arts Activities Calendar MS Band Music in the Wild Service Trip
All Day
Athletics Calendar Panther Run Series #3
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Arts Activities Calendar Bangkok International Choir & Strings Festival Gala Concert
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Sunday, September 27
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Arts Activities Calendar ISB Family Matinee "Alice in Wonderland" @ Thai Cultural Center
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Monday, September 28
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Day Calendar D-1-1
All Day
Arts Activities Calendar Dr. Martina Vasil ES Music Residency
All Day
Athletics Calendar Season 1 Spirit Week
All Day
Arts Activities Calendar MS Theater Sports Tournament
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Tuesday, September 29
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Arts Activities Calendar Dr. Martina Vasil ES Music Residency
All Day
Day Calendar E-2-2
All Day
Athletics Calendar Season 1 Spirit Week
All Day
Middle School Calendar MS Counselor Coffee
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High School Calendar AP Matters for Parents of Current AP Students
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Wednesday, September 30
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Arts Activities Calendar Dr. Martina Vasil ES Music Residency
All Day
Day Calendar F-3-3
All Day
Middle School Calendar G8 Outdoor Education Group 6 (EWC)
All Day
Athletics Calendar Season 1 Spirit Week
All Day
High School Calendar G10 Morrisby Career Assessment
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Thursday, October 1
Day Calendar A-4-4
All Day
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Arts Activities Calendar Box House Theatre Residency
All Day
Arts Activities Calendar Dr. Martina Vasil ES Music Residency
All Day
Middle School Calendar G8 Outdoor Education Group 6 (EWC)
All Day
Athletics Calendar Season 1 Spirit Week
All Day
Friday, October 2
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Day Calendar B-5-5
All Day
Arts Activities Calendar Box House Theatre Residency
All Day
Arts Activities Calendar Dr. Martina Vasil ES Music Residency
All Day
Middle School Calendar G8 Outdoor Education Group 6 (EWC)
All Day
High School Calendar Grades & HALs Update
All Day
Athletics Calendar ISB Varsity Invitational - Soccer/Volleyball
All Day
Athletics Calendar Season 1 Spirit Week
All Day
Athletics Calendar Spirit/Alumni Night
All Day
Elementary School Calendar ES Parent Engage
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Saturday, October 3
Arts Activities Calendar ART NOW Visual Art Exhibition
All Day
Athletics Calendar ISB Varsity Invitational - Soccer/Volleyball
All Day
High School Calendar SAT
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Calendar & Category Legend:

  • Arts Activities Calendar Arts Activities Calendar
  • Athletics Calendar Athletics Calendar
  • Day Calendar Day Calendar
  • Elementary School Calendar Elementary School Calendar
  • High School Calendar High School Calendar
  • Middle School Calendar Middle School Calendar
  • Multi Division and Holidays Multi Division and Holidays
  • Parent Community Calendar Parent Community Calendar