Evanston, Ill.

AT the end of this month, high school seniors will submit their college applications and begin waiting to hear where they will spend the next four years of their lives. More than they might realize, the outcome will depend on race. If you are Asian, your chances of getting into the most selective colleges and universities will almost certainly be lower than if you are white.

Asian-Americans constitute 5.6 percent of the nation’s population but 12 to 18 percent of the student body at Ivy League schools. But if judged on their merits — grades, test scores, academic honors and extracurricular activities — Asian-Americans are underrepresented at these schools. Consider that Asians make up anywhere from 40 to 70 percent of the student population at top public high schools like Stuyvesant and Bronx Science in New York City, Lowell in San Francisco and Thomas Jefferson in Alexandria, Va., where admissions are largely based on exams and grades.

In a 2009 study of more than 9,000 students who applied to selective universities, the sociologists Thomas J. Espenshade and Alexandria Walton Radford found that white students were three times more likely to be admitted than Asians with the same academic record.

Sound familiar? In the 1920s, as high-achieving Jews began to compete with WASP prep schoolers, Ivy League schools started asking about family background and sought vague qualities like “character,” “vigor,” “manliness” and “leadership” to cap Jewish enrollment. These unofficial Jewish quotas weren’t lifted until the early 1960s, as the sociologist Jerome Karabel found in his 2005 history of admissions practices at Harvard, Yale and Princeton.