Answer
You need to look at getting a full bright scholarship look at www.fulbright.co.uk. you will find details about how to apply for it there. however, these scholarships are extremely
competitive. so you should also look at the american colleges you wish to go to and the programme you want to study, and then get in touch with the their financial department for them to inform you on your opportunities. to get more info on the american college system look at the ace www.acenet.edu which is the central education body, or visit your careers adviser.
