As you have asked about the best international schools in India, check below for the information

Indus International School, Bangalore

Pathways World School, Aravali

The International School, Bangalore

Indus International School, Pune

Canadian International School, Bangalore

Agha Khan Academy, Hyderabad;

G.D. Goenka World School, Sohna Road, Gurgaon

Genesis Global School, Noida;

Indus International School, Hyderabad

Stonehill International School, Bangalore

Lancers International School, Gurgaon;

Vidya Sanskar International, Faridabad

Singapore International School, Mumbai;

KIIT International School, Bhubaneswar

Dhirubhai Ambani International School, Mumbai

The Reverside School, Ahmedabad;

Ecole Mondiale World School, Mumbai

Oberoi International School, Mumbai

Mercedes Benz International, Pune

Scottish High International, Gurgaon

Pathways School, Gurgaon

Pathways School, Noida

International School of Hyderabad;

Aditya Birla World Academy, Mumbai

Podar International School, Santacruz (W), Mumbai;

Billabong International, Santacruz W, Mumbai

Ryan Global School, Mumbai;

Sadhbhavana World School, Kozhikode