It is however im not here to bring fear as myself is freaked out. But after studying or speculating why they were rejected for instance no home ties to country, I see that as they don't have a loan to come back to to pay back. Someone is always sponsored with a large amount of money (approx 50k) when the requirement is 10k that probably leave the officer to say well you have more than enough to study and run away in the country. Just my thoughts.