Hi there,
I'm a student from St. George's which is a non-accredited caribbean school. I applied to the States and didn't get in, so instead of reapplying year after year, I came down here for Veterinary school. The difference between nonaccredited and accredited is that nonaccredited (with the exception of ROSS, and maybe soon -- SGU) is not federally backed. You have to take out private loans. At the end of three years here on the island wth SGU, you go back to one of the States schools for your fourth clinical year. Before you leave, you can take a test called the PAVE. Which is like the ECFVG but is a lot cheaper and the clinical portion of the test is considered your fourth year in clinicals. The downside of the PAVE is that it's not accepted in every State like the ECFVG is. The ECFVG is significantly more expensive and is a three day test.
You still have to take the NAVLE like any other Veterinary student in the US.
Let me know if you have any other questions. I love SGU, I don't have any regrets!