The number of students enrolled at Northern Illinois University has dipped slightly, but retention rates are improving. The university reported an enrollment of 20,130 students, a decrease of about 2.3 percent from last year. NIU President Doug Baker says: "We are not where we want to be, but there are encouraging signs of progress." The one-year retention rate for last year's freshmen increased 1 percentage point, to 72 percent. Baker says the university also has been recruiting higher-achieving students.