| Half-Yearly Examination, Junior School | Half-Yearly Examination will be conducted for the students of Junior School. | MC (Js), GC (Js), UC (Js), BC (Js), ODC (Js) | December 1, 2021 | December 12, 2021 |
| Invoice Distribution: Installment 4 | Invoice of Installment 4 will be generated in EMS and distributed among students. | All | December 9, 2021 | December 9, 2021 |
| Annual Picnic | Annual Picnic will be conducted for the students of Senior School | MC (Ss,Ss), GC (Ss,Ss), UC (Ss,Ss), BC (Ss,Ss), ODC (Ss,Ss) | December 13, 2021 | December 13, 2021 |
| Victory Day (Holiday) | School will remain closed due to Victory Day. | All | December 16, 2021 | December 16, 2021 |
| Intra OISMUN 2021 | Intra OIS MUN will be conducted by OISMUN Club | MC (Ms,Ss), GC (Ms,Ss), UC (Ms,Ss), BC (Ms,Ss), ODC (Ms,Ss) | December 22, 2021 | December 24, 2021 |
| Christmas & Winter Vacation (Holiday) | School will remain closed due to Christmas Eve and Winter Vacation. | All | December 24, 2021 | January 7, 2022 |
| Classes Resumes after Winter Vacation | Classes will resume after Winter Vacation. | All | January 9, 2022 | January 9, 2022 |
| Briefing Session on CAIE Registration: May/June 2022 | Briefing Session on CAIE Registration for the candidates of May/June 2022 will be organised. | MC (Ss), GC (Ss), UC (Ss), BC (Ss), ODC (Ss) | January 11, 2022 | January 11, 2022 |
| Payment Deadline: Installment 4 | Payment of Installment 4 must be cleared within this deadline. | All | January 13, 2022 | January 13, 2022 |
| Annual Sports, 2022 | Annual Sports, 2022 will be orgranised. | All | January 21, 2022 | January 21, 2022 |
| Saraswati Pooja (Holiday) | School will remain closed due to Saraswati Pooja. | All | February 5, 2022 | February 5, 2022 |
| Mock Test 1, Senior School | Mock Test 1 will be conducted for the students of Senior School. | MC (Ss), GC (Ss), UC (Ss), BC (Ss), ODC (Ss) | February 6, 2022 | February 24, 2022 |
| Invoice Distribution: Installment 5 | Invoice of Installment 5 will be generated in EMS and distributed among the students. | All | February 13, 2022 | February 13, 2022 |
| Maghi Purnima (Holiday) | School will reamin closed due to Maghi Purnima. | All | February 16, 2022 | February 16, 2022 |
| International Mother Language Day Celebration & Annual ART & Craft Exhibition | International Mother Language Day will be celebrated & Annual ART & Craft Exhibition will be organised for the whole school. | All | February 21, 2022 | February 21, 2022 |
| Class Assessment 2, Senior School | Class Assessment 2 will be conducted for the students of Senior School. | MC (Ss), GC (Ss), UC (Ss), BC (Ss), ODC (Ss) | February 27, 2022 | March 16, 2022 |
| Shab-e-Meraj (Holiday) | School will remain closed due to Shab-e-Meraj. | All | February 28, 2022 | February 28, 2022 |
| Class Assessment 2, Middle School | Class Assessment 2 will be conducted for the students of Middle School. | MC (Ms), GC (Ms), UC (Ms), BC (Ms), ODC (Ms) | March 2, 2022 | March 16, 2022 |
| Class Assessment 2, Junior School | Class Assessment 2 will be conducted for the students of Junior School. | MC (Js), GC (Js), UC (Js), BC (Js), ODC (Js) | March 6, 2022 | March 16, 2022 |
| Mock Test 2, Senior School | Mock Test 2 will be conducted for the students of Senior School. | MC (Ss), GC (Ss), UC (Ss), BC (Ss), ODC (Ss) | March 13, 2022 | March 31, 2022 |
| Payment Deadline: Installment 5 | Payment of Installment 5 must be cleared within deadline. | All | March 15, 2022 | March 15, 2022 |
| Birthday of the Father of the Nation (Holiday) | School will remain closed due to Birthday of the Father of the Nation. | All | March 17, 2022 | March 17, 2022 |
| Shab-e-Barat (Holiday) | School will remain closed due to Shab-e-Barat. | All | March 19, 2022 | March 19, 2022 |
| 1st Ramadan (Holiday) | School will remain closed due to 1st Ramadan | All | April 3, 2022 | April 3, 2022 |
| Report Card Distribution: Mock Test 2 | Report card of Mock Test 2 will be distributed. | MC (Ss), GC (Ss), UC (Ss), BC (Ss), ODC (Ss) | April 10, 2022 | April 10, 2022 |
| Invoice Distribution: Installment 6 | Invoice of Installment 6 will be generated in EMS and distributed among the students. | All | April 11, 2022 | April 11, 2022 |
| Pahela Baisakh (Holiday) | School will remain closed due to Pahela Baisakh. | All | April 14, 2022 | April 14, 2022 |
| Ramadan & Eid-ul-Fitr Vacation (Holiday) | School will remain closed due to Ramadan, Easter Sunday, May Day, Eid-ul-Fitr. | All | April 15, 2022 | May 13, 2022 |
| Payment Deadline: Installment 6 | Payment of Installment 6 must be cleared. | All | May 15, 2022 | May 15, 2022 |
| Classes Resume after Ramadan Vacation | School reopens and classes resume after Ramadan Vacation. | All | May 15, 2022 | May 15, 2022 |
| Buddha Purnima (Holiday) | School will remain closed due to Buddha Purnima. | All | May 16, 2022 | May 16, 2022 |
| Annual Examination, Senior School | Annual Examination will be conducted for the students of Senior School | MC (Ss), GC (Ss), UC (Ss), BC (Ss), ODC (Ss) | May 22, 2022 | June 5, 2022 |
| Annual Examination, Middle School | Annual Examination will be conducted for the students of Middle School. | MC (Ms), GC (Ms), UC (Ms), BC (Ms), ODC (Ms) | May 24, 2022 | June 5, 2022 |
| Annual Examination, Junior School | Annual Examination will be conducted for the students of Junior School. | MC (Js), GC (Js), UC (Js), BC (Js), ODC (Js) | May 26, 2022 | June 5, 2022 |
| Invoice Distribution: Installment 1 of Session 2022-2023 | Invoice of Installment 1 of Session 2022-2023 will be generated in EMS and distributed among students. | MC (Js,Ms), GC (Js,Ms), UC (Js,Ms), BC (Js,Ms), ODC (Js,Ms) | June 13, 2022 | June 13, 2022 |
| Annual Report Card Distribution for Junior School & Middle School | Annual Report Card Distribution for the students of Junior School & Middle School. | MC (Js,Ms) | June 14, 2022 | June 14, 2022 |
| Annual Report Card Distribution for Senior School & Other Campuses | Annual Report Card Distribution for the students of Senior School, Gulshan Campus, Uttara Campus, Banasree Campus & Old Dhaka Campus. | MC (Ss), GC (Js,Ms,Ss), UC (Js,Ms,Ss), BC (Js,Ms,Ss), ODC (Js,Ms,Ss) | June 15, 2022 | June 15, 2022 |
| Invoice Distribution of SS & Othert Campses: Installment 1 of Session 2022-2023 | Invoice of Installment 1 of Session 2022-2023 for Senior School, Gulshan Campus, Uttara Campus, Banasree Campus and Old Dhaka Campus will be generated in EMS and distributed among the students. | MC (Ss), GC (Js,Ms,Ss), UC (Js,Ms,Ss), BC (Js,Ms,Ss), ODC (Js,Ms,Ss) | June 15, 2022 | June 15, 2022 |
