Is it possible to come to the U.S. under my VWP, every two months and stay 90 days and go back for the next 18 motnhs. Only reason I am doing this for is to take some extra classes at a community college. Will I face any problems with the U.S. Immigration officlals at the entry point for coming in and out several times a year under the VWP. If not I might have to apply for a student visa. Is it diffecult to get a student visa for a european passport holder. Thanks.