Underage drinking is an issue that concerns most teenagers. They tend to do it at parties or just at social gatherings. Most teenagers drink because of peer pressure and because of the feeling you get while drinking it. Today's alcohol is more enticing to teenagers e.g cruisers because of the range of colours. It is a lot easier to get alcohol these days. Some parents are willing to buy it for their kids, older siblings buy it for their brothers/sisters.
By the age of 17 more than 70 precent of teens have had at least one drink. Approximately 10 percent of 12 year olds say they have used alcohol at least once. By age 13 that number doubles and by 15, approximately 50 percent have had at least one drink. Teens drink less often than adults but when teens do drink, they drink more than adults. On average, young people have about five drinks on a single occasion. This behavior is called binge drinking. It is a very dangerous way of drinking that can lead to serious problems and even death.
Source: http://www.toosmarttostart.samhsa.gov/families/facts/statistics.aspx