By contrast , at the California Institute of Technology , which has no legacy preferences , only 1.5 percent of students are the children of alumni .
At many selective schools , legacies make up 10 percent to 25 percent of the student population .
At the California Institute of Technology , which has no legacy preferences , only 1.5 percent of students are the children of alumni .
At many selective schools , legacies make up 10 percent to 25 percent of the student population .