No, doctor's certificate doesn't change anything. In fact even if I was in hospital and had an operation this professor wouldn't understand and told me that I can take sick leave as an alternative to not pay for repeating a subject. Another funny thing is that it is actually my third and last test from this subject and I passed first two and will pass this one too eventually. I just don't understand how some people can't think for themselfs and blindly follow the rules.

Anyway, he will talk to dean about it and if the response will be negative I will go to him by myself that probably will be both hilarious and awkward

You've never missed school or went home early because of rain/snow/etc? I never thought that was weird, I mean, if you have a car, okay, you can still go under pouring rain, but if you walk, like most of those kids do, you'll end up soaked and with a cold. Not to mention the school has so much open space that you get wet just coming and going to the different classrooms. AND the school doesn't even have a lightning conductor (is that what you call it?) and there was SO much lightning that day, so it wasn't even very safe for the kids to be there.