All of the Caribbean students/grads I have met have been top notch students and doctors. Especially in the SA sector. I hold absolutely no prejudice against them. For them to have achieved so much in such a "drop you in the deep end" curriculum speaks volumes. Carib schools are noted for dropping you in and making you work, you are not spoon-fed things as you are in the US. At least in Vet Med. Unfortunately it is usually due to low faculty: student ratios and whatnot, but still, you get the picture.
Remember, Carib schools accept a lot, but a lot also can't cut it and drop out. The ones that make it to fourth year and beyond are true go-getters and I very much respect them. I don't think the prejudice is nearly as bad as the MD one....maybe because of what alliecat mentioned - vet students that go Carib and generally much more determined than med students (despite a larger proportion of slightly poorer *initial* resumes, and I do NOT mean that in a demeaning sense, I just couldn't find a better word at 11 pm hah), who tend to go because they think it will be easier to get in/stay in.