I myself is a sophomore student and I have just got the offer from UMW in US. If you are a freshman or sophomore student and you are not satisfied by your school, you may consider about it. Nevertheless, the GPA of you in college is the most important fact in transfer requeist. Try to keep your GPA above 3.5. Addintionally, an above 100 TOFEL would help you in applying a good school, get it done as soon as possible, it is not that hard. At last, if you are interest in transfer, find a intermediary agent would be a good choice, they can save so many time.