According to a New York Post article,

Just one out of every four [New York City public school] students who started high school in 2007 went on to graduate in 2011 prepared for college under a first-ever city measure aligned with City University of New York entrance requirements.

The measure is marginally different from a state college-ready standard that was released earlier this year — yet a comparison shows a slight improvement, from a rate of 21.4 percent college-ready students in 2010 to 25 percent this year.

Unfortunately, this is a national problem.  High school graduates that do not meet these standards still go to college.  Many of these mediocre students require remediation or drop out of college with huge student loan debt and no degree.