KGT International School in Mumbai adopts a range of curricula of the Montessori curriculum as well as CIE ( IGCSE), implemented through a unique method of learning and understanding that makes school a foundation for lifelong learning.

Montessori curriculum emphasizes learning as a process that cannot be determined by a child's age. Instead, learning is a process that is determined by the rate and speed at which a child can acquire one skill before moving on to another skill. This is why it is not uncommon to see mixed-age groupings in Montessori classrooms, where a 2-year old may be in the same classroom setting as a 4-year old, based on developmental ability.