Does this mean no one should go to college? Of course not. First of all, college is more than training for a career, and many might benefit from the social and non-purely academic aspects of advanced schooling, even if the rate of return on college as a financial investment is low. Second, high school students with certain attributes are far less likely to drop out of school, and are likely to equal or excel the average statistics.
Students who do well in high school and on college entrance exams are much more likely to graduate. Those going to private schools may pay more in tuition, but they also have lower dropout rates. Those majoring in some subjects, such as education or one of the humanities, can sometimes improve their job situation by double majoring or earning a minor in, say, economics.
As a general rule, I would say graduates in the top quarter of their class at a high-quality high school should go on to a four-year degree program, while those in the bottom quarter of their class at a high school with a mediocre educational reputation should not (opting instead for alternative methods of credentialing and training).
Those in between should consider perhaps doing a two-year program and then transferring to a four-year school. There are, of course, exceptions to this rule, but it is important for us to keep in mind that college is not for everyone.
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