Playboy picks The University of Colorado-Boulder as its 'Top Party School" for 2011. noting among other factors that Boulder is "home to reefer madness."

Although Playboy and the heartbreak of glaucoma are not often paired, the magazine helpfully points out that the city has 50 medical-marijuana dispensaries.

Every April, it says, nearly half of the university's 24,000-plus undergrads turn out (on?) for the annual "4/20 smoke-out on school grounds."

Playboy reassures traditionalists that Boulder is also a "beer drinker's paradise, with four bre weries in town."

The magazine, which announced its list today, says it bases the annual rankings on such factors as male-female ratio, winning percentage of sports teams, etc., while adding bonus points for schools near beaches, ski slopes and a hot music scene.

It also emphasizes, not as convincingly, that "we factor in academic excellence because the work hard, play hard ethic is the DNA of any party school."

As evidence to the contrary, it should be noted that Playboy says you know Boulder is a party school "because whenever you tell someone that you went there, the first thing they ask is, 'Did you graduate?'"

The rankings: