APs

The Advance placement exams are college level courses which when taken, can give you college credit if a certain benchmark is crossed. They're scored out of 5 and each year's percentage to get a score changes. They're highly recommended by most colleges and although, they cannot harm your application, they can surely boost it.

apcentral.collegeboard.com/apc/html/ap-in-india/ap-in-india.html

The above website gives a list of subjects that can be taken and also, the dates.