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School Calendar


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  • 2023.07.28 HM King's Birthday
  • 2023.07.27 Substitution Day for Asahna Bucha Day
  • 2023.06.12 Summer School
  • 2023.06.07 School Closed
  • 2023.06.06 Visakha Bucha Day Subsitute
  • 2023.06.05 Queen's Birthday Substitute
  • 2023.05.31 End of 4th Quarter
  • 2023.05.05 Substution Day for Labour Day
  • 2023.05.04 Coronation Day - School Closed,
  • 2023.04.10 Songkran Holiday - School Closed
  • 2023.04.07 School Closed
  • 2023.04.06 Chakri - School Closed
  • 2023.04.05 School Songkran Celebration
  • 2023.03.20 Start of Quarter 4
  • 2023.03.16 Quarter Break - No School
  • 2023.03.15 End of Quarter 3
  • 2023.03.06 Makha Bucha Day - School Closed
  • 2023.02.14 Valentine's Celebration
  • 2023.01.18 Chinese New Year Activity (Extended Flagline)
  • 2023.01.13 Basketball U15 Boys and Girls
  • 2023.01.12 SS Music Competition
  • 2023.01.10 ECE and ES International Children's Day
  • 2023.01.09 Begin of Quarter 3
  • 2023.01.05 In-Service Day for Faculty. No Students
  • 2022.12.23 Christmas Holiday Break
  • 2022.12.22 Substitution for Constitution Day
  • 2022.12.19 SS Q2 Examinations
  • 2022.12.16 KG Donation Drive
  • 2022.12.09 Christmas Concert
  • 2022.12.05 Father's Day - School Closed
  • 2022.12.02 SS Math Olympics
  • 2022.11.30 KG Reading Recital
  • 2022.11.30 Chinese Skill Competition
  • 2022.11.29 Secret Brother and Sister
  • 2022.11.28 KG Book Character Day
  • 2022.11.25 Fun Run
  • 2022.11.24 Thanksgiving
  • 2022.11.21 Book Fair
  • 2022.11.13 WASC Visit
  • 2022.11.08 Loy Krathong Celebration
  • 2022.11.02 Yearbook Photo Taking Days
  • 2022.10.31 ES Track and Field
  • 2022.10.31 MAP Tests
  • 2022.10.28 SPTC
  • 2022.10.27 Honor Roll
  • 2022.10.24 Chulalongkorn Substitute (Holiday)
  • 2022.10.17 Start Quarter 2
  • 2022.10.13 October Break
  • 2022.10.12 End Quarter 1
  • 2022.10.10 Secondary Q1 Exams
  • 2022.10.06 ES Got Talent
  • 2022.10.04 Secondary Talent Show
  • 2022.09.30 International Day (Humanities)
  • 2022.09.28 Futsal Under 11 Mixed and Under 13 Girls
  • 2022.09.27 Futsal Under 13 Boys and Under 9 Mixed
  • 2022.09.23 English Writing Competition
  • 2022.09.23 University Fair
  • 2022.09.22 Wai Kru Ceremony
  • 2022.09.21 Fire Drill (Safety & Security)
  • 2022.09.20 Futsal Under 15 Boys and Girls
  • 2022.09.19 Seniors' Presentation / SG Induction Ceremony
  • 2022.09.15 Futsal Open Boys and Girls
  • 2022.09.13 Seniors' Bonding Camp
  • 2022.09.09 Table Tennis U13 - Open
  • 2022.09.09 Flu Vaccine Day
  • 2022.09.02 Mid-Autumn Festival Event(Chinese)
  • 2022.08.30 Badminton U11 and U15
  • 2022.08.29 Badminton U13 and Open, (G.10: ROTCS),
  • 2022.08.15 ECE (Nur-KG) Pajama Day
  • 2022.08.12 Royal Mother's Day
  • 2022.08.08 First Day of School
  • 2022.08.04 Student Preparation for New Academic Year 2022-2023
  • 2022.08.01 All Teachers Orientation
  • 2022.07.29 Asalha Bucha Day
  • 2022.07.28 HM the King's Birthday
  • 2022.07.25 All Teachers Orientation
  • 2022.07.20 New Teachers Orientation
  • 2022.07.19 Orientation Day
  • 2022.07.11 School Break
  • 2022.06.13 Summer Program
  • 2022.06.10 KG Graduation Day
  • 2022.06.07 Secondary Q4 Examination
  • 2022.06.03 Queen Suthida's Birthday
  • 2022.05.23 HS Graduation/ Grade 5 Graduation
  • 2022.05.20 Final Day for Senior Grades Submission
  • 2022.05.16 Visakha Bucha Day
  • 2022.05.12 Seniors Final Exam
  • 2022.05.04 Coronation Day
  • 2022.05.02 Compensation for Labor Day
  • 2022.04.27 High School Poetry Slam
  • 2022.04.22 Earth Day (Go Green, Save the Planet, Reuse & Recycle)
  • 2022.04.18 MAP Test
  • 2022.04.11 Songkran Festival (Thai New Year) Break
  • 2022.04.08 Songkran New Normal
  • 2022.04.06 Chakri Memorial Day (HOLIDAY)
  • 2022.04.05 SPTC
  • 2022.04.01 Kindergarten Sports Day
  • 2022.03.28 Yearbook Photo Taking Days
  • 2022.03.21 First Day of Fourth Quarter
  • 2022.03.18 Grading Day (NO School for Students)
  • 2022.03.15 Secondary Q3 Examination
  • 2022.03.09 Secondary Poetry Slam
  • 2022.03.07 Elementary Spelling Bee
  • 2022.02.21 High School Pre-registration
  • 2022.02.16 Makha Bucha Day
  • 2022.01.28 KG Work Appreciation Day
  • 2022.01.24 MAP Test
  • 2022.01.21 SPTC
  • 2022.01.17 KG Children's Day Online
  • 2022.01.10 First Day of Third Quarter
  • 2021.12.24 Year-end Holidays
  • 2021.12.20 Secondary Q2 Examination
  • 2021.12.10 Constitution Day
  • 2021.12.06 HM the Late Rama 9's Birthday
  • 2021.11.26 Q1 Honor Roll/Character Award: SS & ES (in class)
  • 2021.11.19 Loy Krathong Family Celebration Online
  • 2021.11.01 MAP Test
  • 2021.10.29 SPTC with Jel's mom
  • 2021.10.29 SPTC Online
  • 2021.10.25 Chulalongkorn Memorial Substitution Day
  • 2021.10.18 First Day of Second Quarter
  • 2021.10.15 Grading Day
  • 2021.10.14 Secondary Q1 Examination
  • 2021.10.13 King Rama 9 Day
  • 2021.10.11 Secondary Q1 Examination
  • 2021.09.22 Short Video Talent Show
  • 2021.09.15 Grade 11-12 University Virtual Fair
  • 2021.09.10 Global Issues and Humanitarian Aid Week
  • 2021.08.27 Seniors Presentation & SG Induction
  • 2021.08.20 ROTCS Enrollment
  • 2021.08.17 SG Election
  • 2021.08.16 First Day of School for Nursery and Kindergarten
  • 2021.08.12 The Queen's Birthday
  • 2021.08.10 KG Parents' Orientation
  • 2021.08.09 First Day of School for Elementary and Secondary
  • 2021.08.04 Student Preparation for New Academic Year 2021-2022
  • 2021.08.02 Registration Days/Parents' Orientation
  • 2021.07.30 Teacher and Staff Dinner
  • 2021.07.28 King Vajiralongkorn's Birthday
  • 2021.07.26 Asalha Bucha observed
  • 2021.07.19 Registration, All Teachers' Orientation
  • 2021.07.14 New Teachers Orientation(Visa/Work Permit)
  • 2021.07.05 School Break
  • 2021.07.02 Summer Final Examination & Grades Submission
  • 2021.06.18 Summer Midterm Examination
  • 2021.06.07 Summer School Starts
  • 2021.06.03 Queen Suthida's Birthday
  • 2021.05.31 Summer Break for Students
  • 2021.05.31 Progress Report Completion/Visa and Work Permit Extension
  • 2021.05.26 Visakha Bucha
  • 2021.05.25 Q4 Examinations
  • 2021.05.24 KG Graduation Day
  • 2021.05.21 High School & ES Graduation
  • 2021.05.21 ISAA U15 Girls Volleyball
  • 2021.05.21 ISAA U13 Boys Volleyball
  • 2021.05.17 Q4 Assessments
  • 2021.05.14 ISAA Open Girls Volleyball
  • 2021.05.14 Final Day for Senior Grades Submission
  • 2021.05.10 Fine Arts Week/Music Recital & Art Competition
  • 2021.05.06 SS Science Fair
  • 2021.05.05 ES Science Fair
  • 2021.05.05 K3/G1 Shadow Day
  • 2021.05.05 Seniors Final Exam
  • 2021.05.04 Coronation Day
  • 2021.05.03 Labor Day observed
  • 2021.04.30 Earth Day
  • 2021.04.26 Business Week
  • 2021.04.23 ISAA Swimming U13 Open at BCISB
  • 2021.04.22 ISAA Swimming U9 & U11 at BCISB
  • 2021.04.20 Secondary Poetry & KG Earth Day
  • 2021.04.12 Songkran Break
  • 2021.04.09 Songkran Activity Day/Family Day
  • 2021.04.06 Chakri Day
  • 2021.04.05 ISAA AD Meeting BCISB
  • 2021.04.02 Q3 Honor Roll/Character Award
  • 2021.03.31 ISAA Open House Basketball
  • 2021.03.30 ISAA U15 Girls Basketball
  • 2021.03.29 MAP Test
  • 2021.03.28 Funfair
  • 2021.03.26 Reuse & recycle, KG/ES/SS Open House and SPTC
  • 2021.03.24 ISAA Open Girls Basketball
  • 2021.03.24 SS Film Festival
  • 2021.03.23 ISAA U15 Boys Basketball
  • 2021.03.19 ES Math Day and KG Sports Day
  • 2021.03.16 ISAA U13 Boys Basketball
  • 2021.03.15 First Day of Q4
  • 2021.03.12 Teacher Grading Day
  • 2021.03.09 Q3 Examinations
  • 2021.03.09 ISAA U13 Open Table Tennis
  • 2021.03.05 ES Current Event Monologue
  • 2021.03.05 ES Drama Performance
  • 2021.03.04 ISAA U13 and Open Badminton
  • 2021.03.03 ES Literacy Week- Spelling Bee
  • 2021.03.02 ISAA U11 and U15 Badminton
  • 2021.02.25 Makha Bucha Day Observed
  • 2021.02.22 Pre-registration
  • 2021.02.22 MAP Test
  • 2021.02.19 KG Sports Day
  • 2021.02.15 Hearts Day Celebration
  • 2021.02.12 Chinese Lunar New Year's Day
  • 2021.02.11 Chinese New Year Activity
  • 2021.02.08 Yearbook, Make-up Photo Day
  • 2021.02.04 KG Open House
  • 2021.02.02 Q2 Honor Roll/Character Award
  • 2021.01.29 KG Cleanup Day
  • 2021.01.29 ES Field Trip
  • 2021.01.27 HS Camp
  • 2021.01.21 ISAA U9 Futsal
  • 2021.01.19 ISAA U11 Mixed Futsal
  • 2021.01.15 KG/ES/SS Open House & SPTC
  • 2021.01.08 KG Children's Day
  • 2021.01.05 First day of Q3
  • 2021.01.04 Teacher in-service day
  • 2020.12.21 First Semester Break/Grading/Year-end Holidays
  • 2020.12.18 Yearend New Year Class Party
  • 2020.12.16 Q2 Examinations
  • 2020.12.11 King Bhumibol's Birthday (Substitution)
  • 2020.12.10 Constitution Day
  • 2020.11.27 Fun Run
  • 2020.11.26 ISAA AD Meeting
  • 2020.11.26 Thanksgiving Celebration
  • 2020.11.23 Book Fair
  • 2020.11.20 Secret Brother and Sister
  • 2020.11.19 Grades 1-2 Day Camp
  • 2020.11.13 KG Day Camp
  • 2020.11.05 Grades Camp
  • 2020.11.05 ES Character Traits Award
  • 2020.11.04 HS Q1 Honor Roll Awards
  • 2020.11.03 MS Q1 Honor Roll Award
  • 2020.10.30 Loy Kratong (Celebration in class)
  • 2020.10.23 Chulalongkorn Day
  • 2020.10.22 KG/ES/SS Open House and SPTC
  • 2020.10.21 Computer Keyboarding Competition
  • 2020.10.20 HS Initiation Day
  • 2020.10.19 Digital Citizenship Day
  • 2020.10.13 Anniversary of the Death of King Bhumibol
  • 2020.10.12 First Day of Second Quarter
  • 2020.10.09 Teacher Grading Day
  • 2020.10.06 Q1 Examination
  • 2020.10.02 ES Got Talent
  • 2020.09.25 KG Career Appreciation Day & ES Career Awareness
  • 2020.09.21 MAP Test
  • 2020.09.15 University Day
  • 2020.09.11 International Day
  • 2020.09.04 Fire Drill
  • 2020.09.03 Wai Kru
  • 2020.08.28 Seniors Presentation/SG Induction
  • 2020.08.25 Induction
  • 2020.08.24 Elementary SG Election
  • 2020.08.21 Pajama Day(KG)/My Favorite Dress Day(ES)/Health Check-up
  • 2020.08.17 Year Book Photo Day
  • 2020.08.12 The Queen's Birthday
  • 2020.08.06 ES Open House
  • 2020.08.05 First Day of SY 2020-2021
  • 2020.07.31 Teacher & Staff Dinner
  • 2020.07.23 All Teachers' Orientation
  • 2020.07.15 New Teachers' Orientation(Visa and Work Permit)
  • 2020.07.03 Summer School Final Examination & Grades Submission
  • 2020.06.19 Summer School Midterm Examinations
  • 2020.06.08 Summer School
  • 2020.06.01 Summer Break for Students
  • 2020.06.01 Progress Report Completion/Visa and Work Permit Extensions
  • 2020.05.27 Q4 Examinations
  • 2020.05.26 KG Graduation Day
  • 2020.05.25 ES Graduation Day
  • 2020.05.22 High School Graduation Day
  • 2020.05.15 Final Day for Senior Grades Submission
  • 2020.05.11 Fine Arts Week/Music Recital & Art Competition
  • 2020.05.09 Junior & Senior Prom
  • 2020.05.08 Swim Meet
  • 2020.05.05 ES Science Fair
  • 2020.05.04 Seniors' Final Exam
  • 2020.04.30 Earth Day:School Cleaning Day
  • 2020.04.29 U13 Boys/Girls Volleyball
  • 2020.04.27 Spring MAP Tests
  • 2020.04.23 Secondary Poetry
  • 2020.04.22 U15 Boys and Girls Volleyball
  • 2020.04.21 Open Boys and Girls Volleyball
  • 2020.04.13 Songkran (Thai New Year) Break
  • 2020.04.10 Chakri Memorial Day Substitute
  • 2020.04.09 Songkran Activity Day/Family Day
  • 2020.04.02 Honor Roll Award (Flagline)
  • 2020.03.31 U13 and Open Badminton
  • 2020.03.31 Business Week
  • 2020.03.30 School Holiday
  • 2020.03.29 Funfair by Junior Class
  • 2020.03.27 Open House Student Parent Teacher Conference(SPTC)
  • 2020.03.25 Reuse & Recycle
  • 2020.03.20 Math Day
  • 2020.03.19 U11 and U15 Badminton
  • 2020.03.17 First Day of Q4
  • 2020.03.13 Teacher Grading Days
  • 2020.03.10 Q3 Examinations
  • 2020.02.28 Whole School Sports Day
  • 2020.02.25 Act It Out
  • 2020.02.21 KG Sports Day
  • 2020.02.20 Film Festival
  • 2020.02.17 ES Literacy Week & Spelling Bee
  • 2020.02.14 Valentine's Day Mini Concert
  • 2020.02.12 U13 Open Table Tennis
  • 2020.02.10 Substitution for Makha Bucha Day
  • 2020.02.07 SS Thai Fieldtrip
  • 2020.02.06 U13 Girls Basketball
  • 2020.02.03 Honor Roll Award (Flagline)
  • 2020.01.31 KG Clean-up Day
  • 2020.01.29 HS Camp
  • 2020.01.28 U13 Boys Basketball
  • 2020.01.23 Chinese New Year Activity(extended flagline)
  • 2020.01.22 Track Meet
  • 2020.01.20 Yearbook Makeup Photo Day
  • 2020.01.17 Student Parent Teacher Conference(SPTC)
  • 2020.01.17 U15 Girls Basketball
  • 2020.01.16 U15 Boys Basketball
  • 2020.01.10 KG Career Appreciation Day
  • 2020.01.07 First Day of Q3
  • 2020.01.06 Teacher In-service(all grades and comments completed)
  • 2019.12.19 Teacher Grading Days
  • 2019.12.19 First Semester Break/Grading/Year-End Holidays
  • 2019.12.18 Year End-New Year Class Party
  • 2019.12.16 Q2 Examinations
  • 2019.12.13 Christmas/New Year Event-Parents Invited
  • 2019.12.02 Open Girls Basketball
  • 2019.11.29 Fun Run
  • 2019.11.25 Open Boys Basketball
  • 2019.11.22 Secret Brother and Sister
  • 2019.11.21 Grades 1-2 Camp
  • 2019.11.13 Middle School Camp
  • 2019.11.11 Loy Krathong Celebration
  • 2019.11.08 KG Fieldtrip
  • 2019.11.07 Grades 3-5 Camp
  • 2019.11.06 U9 Futsal
  • 2019.11.05 Honor Roll Award (Flagline)
  • 2019.11.04 U11 Futsal
  • 2019.10.31 Halloween Activity
  • 2019.10.30 U13 Girls Futsal
  • 2019.10.25 ES and SS Open House Student Parent Teacher Conference
  • 2019.10.22 HS Initiation
  • 2019.10.18 Grade 2 Open House Student Parent Teacher Conference(SPTC)
  • 2019.10.18 High School ESport Tournament
  • 2019.10.18 KG Open House Student Parent Teacher Conference(SPTC)
  • 2019.10.17 All Grades and Comments Completed
  • 2019.10.15 Fall MAP Tests
  • 2019.10.15 First Day of Q2
  • 2019.10.11 Teacher Grading Days
  • 2019.10.08 Q1 Examinations
  • 2019.10.03 ES Got Talent
  • 2019.09.27 KG Day Camp
  • 2019.09.24 U13 Boys Futsal
  • 2019.09.20 U15 Girls Futsal
  • 2019.09.18 U15 Boys Futsal
  • 2019.09.17 University Fair
  • 2019.09.13 International Day
  • 2019.09.10 Open Girls Futsal
  • 2019.09.06 Grade 10: ROTCS
  • 2019.09.06 Fire Drill
  • 2019.09.05 Wai Kru (Teacher Respect) Day
  • 2019.09.02 Open Boys Futsal
  • 2019.08.30 Grade 10: ROTCS
  • 2019.08.29 Seniors Presentation/SG Induction
  • 2019.08.23 My Favorite Dress Day(KG)
  • 2019.08.23 Whole School Health Check-up
  • 2019.08.23 Grade 10: ROTCS
  • 2019.08.19 Yearbook Photo Day
  • 2019.08.09 KG and ES Open House for Parents to Meet Teachers
  • 2019.08.09 Grade 10: ROTCS
  • 2019.08.07 Senior Bonding Camp
  • 2019.08.05 First Day of SY 2019-2020
  • 2019.08.02 School Holiday
  • 2019.08.01 Teacher & Staff Dinner
  • 2019.07.24 Registration Day
  • 2019.07.24 All Teachers' Orientation
  • 2019.07.17 New Teachers' Orientation(Visa and Work Permit and Regulations)