Hurray It seems the company you're talking about is a Placement firm. It(training a no experience candidate and marketing) used to be hot during bloom days but I am no expert on this in recent days. The firms do have right to sponsor you H1 and if they aren't asking any money for it they might be genuine. But anything can go wrong and you don't want to take chances. My advise is that you should start your grad school. Most of them have Deferred payment program where you don't have to pay the whole tuition fees upfront, besides they even have refund options. When it is time to join the company, go there and experience it for a week or two. Since there will be people from that company with whom you will be sharing the room, you can ask their honest opinion too. If you are then placed on a job, then you can stop your graduate classes since you now have H1. Its not too much of a loss now that you have found a steady source of income. When you can ride two horses in a chariot, don't choose a single one just coz it is faster.