[Ihmahr]

This question I can only answer for holland, where I live.

Basically you can apply to any university and they will let you in. Sometimes you need maths, but mostly it is open. If you don't score 50 out of 60 credits in your first year you're out. You fail a class if your grades are too low, which is more frequent than would happen in usa.

[dnautics]

would never fly in the US. Students would sue for unfair (or worse, from a PR perspective, discriminatory) treatment. Education is a right, and by flunking those students, you are denying those students that right.

[extra88]

Nonsense. American students at public and private universities flunk out all the time.