Hi Amy. Here are a couple of ideas to consider:
1. Effective Jan 1,2014 I understand that pre-existing condition restrictions will no longer apply to getting health insurance in the US......assuming that the Affordable Care Act is not repealed. I sure hope not......I fought the pre-existing condition problem throughout my working life.
2. Currently, in the US, if you have medical insurance in force you can transfer to a different insurer without re-satisfying a pre-existing clause....assuming you had satisfied that clause in the older policy. That is the way it was when I retired from the health insurance business...and I think it still applies. However, how that might work coming from a foreign to a domestic insurer, I am uncertain.
3. I would certainly contact the school you are planning to attend.....they may have special programs for foreign students.
4. You may be able to continue your home coverage and can return to India if a serious problem develops and if you can't get domestic coverage.
Good Luck