Drew University, like many colleges, is working harder to deter underage drinking, but that didn't stop students younger than 21 from drinking heavily at campus parties Labor Day weekend. "The parties are in dorms, on top of buildings, wherever people find an ample place where they're not going to be bothered," said 18-year-old Dean Shtainhorn of Millburn, who admitted to experimenting with alcohol. The Madison campus is not unlike colleges across the country dealing with the problem of underage alcohol consumption and binge drinking. That is why Drew University president Robert Weisbuch said he joined the Amethyst Initiative, a national...