An increasing number of students nationwide and worldwide are turning to online degree programs to complete or advance their educations while they work. Online enrollment jumped from 1.98 million in 2003 to 2.35 million the following year, accounting for 7 percent of postsecondary education, according to Eduventures, a Boston firm that studies trends in education. Another study funded by the Alfred P. Sloan Foundation, reports that 65 percent of universities offering face-to-face graduate courses also offer graduate courses online. By early 2008, Eduventures predicts, about one in 10 college students will be enrolled in an online degree program. Last March, Congress passed a law that drops the requirement that colleges offer at least half their courses face to face to receive federal student aid - a move analysts say should attract more students and schools in the online industry.