Australia has been stunningly successful in its ability to recruit foreign students. An estimated 250,000 of them study at Australia's 39 universities and their offshore programs. That's an estimated 6 percent of the world market. This article reports that even as Australia has gained admiration overseas for its recruiting successes, university administrators and professors here have become increasingly worried that their higher-education system has developed a dangerous dependence on foreign students. About 25 percent of the public system's budget comes from foreign-student tuition. That revenue proved to be a blessing for much of the 1990s and the early 2000s as federal support declined. Enrollment numbers have dropped from their double-digit increases and higher-education officials grow concerned about revenue and quality.