I study in an Indian school and am currently in 11th grade (high school junior in American terms).
I want to pursue a double major in Drama and Economics along with a minor in International Studies.
I would like to know if this is in fact possible and advisable as I’m unable to come to a conclusion.
It depends on the school, but generally it would be possible. Unless a student is in engineering or business, a double major is usually (not always) possible, and even somewhat common. It gets a little more difficult when a student also wants to have an additional minor. Most schools (not all) require all students to take a few classes: freshman seminars, basic writing class, some broad-based (divisional) classes, and maybe a couple of language classes for those who have not met language requirement in high school. This is typically 4-8 classes in total, though it might be fewer in some cases and more in some. Majors typically require 10-12 classes and minors approximately six. A student will typically take 32-40 classes to complete their BA/BS (some schools have a typical schedule of 4 4-hour classes and some have a typical schedule of 5 3-hour classes). So it can be hard to fit in enough classes for 2 majors and 1 minor.
That said, the majors/minors you mention would work better than most. You might be able to get credit toward your Economics and International Studies programs for the same class. For example, an International Economics class might count toward both the Econ major and IS minor. A drama class might count toward one of your divisional requirements. So you might check major requirements and “divisional” requirements at schools where you might be interested and see what the school says about this. Typically a school publishes a “Bulletin” that includes this info. Here’s a link to one school bulletin, as an example. See pages 66-71 at this link to answer your question for this school. You can google the bulletin for most schools. Good luck!
Drama is tough to double major with at top performing arts schools. Look at liberal arts colleges where they want everyone to be seeking a broad education. If it’s not clear from a school website, ask.