Is CU Boulder really that much of a party school?

Okay, so I've toured several college campuses and I have fallen in love with CU's campus in Boulder. However I am not a pot-smoking hippie- so my question is: will i be in the minority? Are there still a fair amount of people who are there for their education? I'm all for a good time & parties are fine, but at the end of the day I'm there for a degree. anything helps..thanks!