| Academic |
| July 6 2011 | IH Quiz Selection Rounds (IX - XI) |
| July 8 2011 | Holiday Reading Test (English) |
| July 9 2011 | Founder's Day Celebration |
| July 9 2011 | IH Painting Competition |
| July 12 2011 | Holiday Reading Test (Hindi) |
| July 13 to July 26 2011 | IH Football Begins |
| July 15 2011 | FA 1 Ends |
| July 16 2011 | FA 2 Begins |
| July 18 to July 23 2011 | IH Cultural Week (VI to VIII) |
| July 20 2011 | School Council Meeting |
| July 27 2011 | Scout & Guide Activity |
| July 30 2011 | Unit Tests I for Classes VI to XI and Unit Tests II for Class XII begin |
| August 4 2011 | Unit Tests End (VI to XII) |
| August 11 2011 | 3rd Volunatry Blood Donation Camp |
| August 12 to August 27 2011 | IH Handball |
| August 17 2011 | School Council Meeting |
| August 18 to August 20 2011 | Sangam-Fest 2011 |
| August 20 2011 | Parent Teacher Meeting (VI to XII) |
| August 23 to August 27 2011 | IH Cultural Week (IX to XII) |
| August 25 2011 | District teams practices |
| September 3 2011 | Interschool Cultural Event |
| September 21 2011 | School Council Meeting |
| September 30 2011 | FA2 ends |
| October 1 2011 | SA1/Half-Yearly Exam for classes VI to XII begin |
| October 12 2011 | SA1/Half Yearly Exams for Class VI to XII end |
| October 12 2011 | Athletic Practices Begin |
| October 13 2011 | FA3 Begins |
| October 22 2011 | Annual Sports Day |
| October 31 2011 | Cricket practices Begin |
| November 5 2011 | Parent Teacher Meeting (VI to XII) |
| November 8 2011 | School Council Meeting |
| November 12 2011 | School Fete |
| November 15 2011 | IH Cricket Begins |
| November 17 2011 | Cricket Team's Tour to Australia |
| November 21 2011 | Test Series for Class XII begins |
| November 21 to November 30 2011 | Individual Table Tennis |
| November 21 2011 | Individual Tennis Begins |
| December 1 2011 | II Unit Tests Begin (VI to XI) |
| December 5 2011 | IH Cricket Ends |
| December 5 2011 | IH Tennis Ends |
| December 12 2011 | Test Series for class XII breaks for PG |
| December 17 to December 18 2011 | XXXII Annual Prize Giving |
| December 20 2011 | Test Series for class XII restarts |
| December 23 2011 | II Unit Tests End (VI to XI) FA3 Ends FA4 Begins |
| December 27 2011 | Test Series for class XII ends |
| January 7 2012 | Parent Teacher Meeting for class XII |
| January 12 to January 21 2011 | IH Basketball |
| January 18 2012 | School Council Meeting |
| January 20 to January 23 2011 | Mayoor T-20 Cricket Tournament |
| January 21 2012 | Parent Teacher Meeting (VI to XI) |
| January 23 to January 31 2012 | Pre-Board exams for class XII |
| January 23 2012 | IH Cross Country Practices Begin |
| February 4 2012 | Parent Teacher Meeting for class XII |
| February 5 2012 | IH Cross Country |
| February 14 2012 | School Farewell to XII |
| February 15 2012 | FA 4 ends |
| February 22 2012 | School Council Meeting |
| March 1 to March 17 2012 | Annual Examination |
| March 21 2012 | Answer Sheets to be seen by students |
| March 24 2012 | Declaration of Result [PTM] |
| March 27 2012 | Classes for XII Begin
Staff Retreat |
| April 2 2012 | New Academic Session Begins; FA1 begins |
| April 3 2012 | IH English Essay Writing |
| April 7 2012 | IH Hindi Essay Writing |
| April 10 2012 | IH Painting Competition |
| April 13 to April 30 2012 | IH Hockey |
| April 14 2012 | Philately Exhibition |
| April 16 2012 | IH Quiz (Selection Round) for Classes VI-VIII |
| April 18 2012 | School Council Meeting & Elections |
| April 27 to April 28 2012 | IH Hindi One Act Play |
| May 1 2012 | Summer Break Begins for Classes LKG to II |
| May 4 to May 5 2012 | IH English One Act Plays |
| May 7 2012 | Parent Teacher Meeting (VI to XI) |
| May 7 to May 30 2012 | Summer School |
| May 8 2012 | Summer Classes for X & XII begin |
| May 8 to May 12 2012 | I Unit Test for Class XII |
| May 12 2012 | Summer Classes for X end |
| May 30 2012 | Summer Classes for Class XII end |
| June 28 2012 | H.O.D. Meeting |
| June 29 2012 | Staff Meeting |
| July 1 2012 | 1-July School Reopens |
| Holidays |
| August 13 2011 | Raksha Bandhan |
| August 15 2011 | Independence Day |
| August 22 2011 | Janmashtami |
| August 31 2011 | Idu'l Fitr* |
| September 7 2011 | Ramdev Jayanti |
| September 28 2011 | Navratra Sthapna |
| October 6 2011 | Dussehra |
| October 23 to October 30 2011 | Diwali Break |
| November 7 2011 | Idu'l Juha* |
| November 9 2011 | Pushkar Fair |
| November 10 2011 | Guru Nanak Jayanti |
| December 6 2011 | Muharram* |
| December 24 to January 2 2012 | Winter Holidays |
| December 25 2011 | Christmas |
| January 26 2012 | Republic Day |
| February 20 2012 | Mahashivratri |
| March 8 to March 9 2012 | Holi |
| April 5 2012 | Mahavir Jayanti |
| April 6 2012 | Good Friday |
| May 6 2012 | Summer Break Begins for Classes III to IX, XI |
| May 13 2012 | Summer Break begins for Class X |
| May 31 2012 | Summer Break begins for Class XII |
