Happy Vappu to you!
The most important days for Finnish students are the April 30th and May 1st! If possible, it's a week long party with lots of pick-nicks (if the weather is good), Tippaleipä (funnel cake) eating, Sima (bäähhhh) drinking, wearing student overalls and student caps. In general a crazy time where most of the people are just drunk all the time. But there is also a lot of tradition behind it. :) Finns love traditions! 
