It is probably safe to assume that just about 0 percent of people under the age of 20 have a college degree (not including the few savants who graduate high school before turning 18), which essentially makes this statistic useless. It gets even worse when you take into account the commonly understood fact that it takes many students more than 4 years to complete a degree. This attempt at using a statistic that does not make sense in context really degrades the value of the entire article and makes it seem like the nations youth is worse off than it actually may be.