Students and teachers at DIS are divided into four Houses, Nilgiri, Vindhyachal, Shivalik and Aravali. The House system aims to give students an identity and sense of pride in a supportive, secure environment. The Houses provide for positive competition and a closer rapport between students and teachers. They also aim to help new staff and students adapt to the culture of the School. The Houses compete in a number of sporting, academic and cultural activities for points.

The House system is an integral and vibrant part of the school's culture. The House system is designed to reflect and enhance the values of the school. This way, it provides opportunities for students to develop all aspects of their growth and learning: personality, morality, creativity, knowledge and skills.