The idea took birth as a brain child in the dynamic and innovative mind of Mrs. S. Mansharamani, Principal, CMS RDSO Campus. Being an athlete and educationist, the idea reverberated as a gleam to outshine the other sports events. The concept was encouraged and augmented by the global visionaries and ambassadors for world peace Dr. Jagdish Gandhi, Founder Manager, City Montessori School & Mrs. (Dr.) Bharti Gandhi, Founder Director, City Montessori School who are also the recipients of UNESCO Prize for Peace education.

Sports, as Mr. Gandhi believes, is the fabric that joins different cultures and brings under one canopy the people of all nations.

The 1st EXSPO was inaugurated by Mr. Kapil Dev, The Century Player, and graced by the presence of Mrs. P. T. Usha, Shiny Wilson, Bahadur Prasad etc. 400 participants & officials from Sri Lanka and all over India participated.

The 2nd EXSPO was inaugurated on 28th October 2003 by Mr. Dara Singh, Former World Champion (Wrestling) & Member of Parliament. Mr. Ajay Jadeja, (cricketer), Shiny Wilson, Wilson Cherian, Bahadur Prasad, Ajit Wadekar and Jafar Iqbal graced the occasion to motivate the sportsmen. More than 600 participants & officials had participated from Pakistan, Sri Lanka, Nepal & India.

The 3rd EXSPO was organised from 29th October to 3rd November 2004 and was inaugurated by Francis Fanthome, Chief Executive & Secretary ICSE & ISC Board, New Delhi. Mr. Vikram Kaul, President, Jawaharlal Nehru Sports Trust, New Delhi, was the Special Guest of Honour. More than 1000 athletes & officials participated in this School Olympiad from Pakistan, Nepal, Uzbekistan, Afghanistan and all over India.

Mr. P Gopichand, Mr. Abhinn Shyam Gupta, Mr. Bharat Thakur, Ms. Sunita Rani, Mr. Sayad Rafat, Mr. Bahadur Prasad and Mr. Shakti Singh graced the occasion.

The 4th EXSPO was inaugurated by Mr. Rajeev Shukla, M P, journalist, Vice – President of Board of Cricket Control in India. Eminent sports personalities like Ms. Aparna Popat, Mr. Gyanendra Pandey and Mst. Sahaj Grover graced the occasion. More than 980 participants and officials had participated from 10 nations.

The 5th EXSPO was held from 28th October 2006 to 1st November 2006. It was inaugurated by Mr. R. K. Chaudhary, Sports Minister, Government of U P. About 50 teams from 7 nations had participated. Eminent celebrities like Mr. Milkha Singh, Mr. Jaspal Rana, Mrs. Bhagyashree and Mst. Budhia Singh graced the occasion.

The 6th EXSPO was held from 18th October 2008 to 21st October 2008. About 40 teams from 5 nations had participated in this mega event. Eminent celebrities like Mr. G.S. Sandhu, Mr. Akhil Kumar, Ms. Alka Tomar, Mr. Ravindra Singh, Ms. Puja Sharma, Ms. Anita Mavi, Mr. Jabbar Singh Som and Mr. Sushil Kumar Rajput graced the occasion.