Apart from schools mentioned above...tough to get a loan without cosigner, with which u can cover both Tuition as well as living expenses in USA.
If u want to get the max. loan in India without collateral, u can apply to Credila for an amount of 20 lakhs only, but the drawbacks is that u need to start paying the emis from the first month itself after the loan amount is used..
If u want to apply for a loan above 20 lakh, then u need to provide collateral generally 1.5 times the loan amount (like for 30 lakhs u need to give collateral worth 45 lakh, as assessed by them). The repayment starts 6 months after completion of ur course or employment (whichever earlier). The approval takes 1 week provided u submit all documents.
For state and private banks, the collateral condition applies generally for a loan amount greater than 7 lakhs and generally takes 2 months(considering financial year ending in march, if u apply now, they will be a lot busy now in the next month) to process before you get a sanction letter. Repayment starts after completing college or getting a job.