Breathless *exhale deeply

It's amazing how today when i was doing my Science Test and that everybody pretty much got the same mark. And same goes for me, but what's amazing is that the person that every single time when i have a test that somebody who actually didn't revise seems to be at the same pace as what i got for it. And they didn't even revise while i did. Is this some kind of curse or psychological way that when you revise you wouldn't get great marks and when you don't revise you get good marks? But isn't what people actually say that "Revise more throughly to get grades", but i already revise but instead it didn't came up for what i deserve for.

2:28 p.m (Qatar)