Nationwide, about a third of first-year students in 2007-08 had taken at least one remedial course, according to the U.S. Department of Education. At public two-year colleges, that number rises to about 42%. Education observers worry that the vast numbers of students coming to college unprepared will pose a major roadblock to President Barack Obamaâ??s goal for the United States to once again lead the world in college degrees.