I love it when people judge others and not themselves. Not.
Well then, let's look at your post Ray. By the way Ray, it's a good thing you didn't write more. Had you done so, your own communication skills would have been even more glaring.

You wrote, "I dont think these people had the communication skills to function properly in their own country............"
But before that you wrote, "I also met a handful of genuine losers, some of which I suspect have been posting here."
Uh, excuse me Mr. Pot Calling the Kettle Black, that would be, "some of whom." "Which" refers to things.
Here's another example of your great "skills."
"It goes to show how the expectations you bring with you can effect your experience."
That would be "affect" your experience, which actually means "to have an effect on."

As for Aston schools, my opinion is that they care little about their employees; however, I don't feel like addressing that issue at this time - it's well documented here and elsewhere.
In regards to your apparent penchant Ray for condemning others for what you perceive to be their lack of communication skills, I would suggest that you refine your own. I suspect that Aston would have prefered that you at least demonstrate high school graduate level English in your written defense of them.

But hey Ray, keep practicing. Maybe next time you'll get it right. You might even become a good enough writer to teach in your own country.