Step 1: Create a professional looking basic website, with the overall idea to get indian schools to pledge to help create a Covid-Free India by making the covid vaccine mandatory at their schools. Have a section where you list the schools that have taken the pledge.
Step 2: Create a list of the biggest medium and small range cities in India. You can find that on Wikipedia. You can skip the big cities like Delhi, Mumbai, Bangalore, Kolkata
Step 3: Google each individual city and look up the schools there. There will be at least 50 to 100 schools per city. Try to find the smaller ones, not affiliate with huge school networks.
Step 4: Find their email address on their page, and send them a professional sounding email asking them to pledge that they will require the covid vaccine for all school children attending their school. Ask if they would also like to list their name on the website as one of the schools that have made the pledge for a vaccine mandate at their school. Be sure to use the word "international" in your email and website, since that word tends to impress indians.
Pretty simple plan. Feel free to add your own input and make it even more professional. Perhaps use an email scraper program, and a mass-emailer program, so you can instant email 1000s of indian schools at the same time. Use an email harvester program to scrape email addresses from search results like "schools in Delhi", etc.
Good luck! Let's make sure India is 100% vaccinated for Covid, including the children!