When racial preferences were banned by the voters in California, there were dire predictions that this would mean the virtual disappearance of black and Hispanic students from the University of California system. What in fact happened was a 2% decline in their enrollment in the University of California system as a whole, but an increase in the number of black and Hispanic students graduating, including an increase of 55% in the number graduating in four years and an increase of 63% in the number graduating in four years with a grade point average of 3.5 or higher.
Instead of the predicted drastic decline in enrollment in the system as a whole, there was a drastic redistribution of black and Hispanic students within the University of California system. Their enrollment dropped at the two most elite campuses, Berkeley and UCLA — by 42% at the former and 33% at the latter. But their enrollment rose by 22% at the Irvine campus, 18% at the Santa Cruz campus, and 65% at the University of California at Riverside. After this redistribution, the number of black and Hispanic students who graduated with degrees in science, mathematics, and engineering “rose by nearly 50 percent,” according to Sander and Taylor. The number of doctorates earned by black and Hispanic students in the system rose by about 20%.
In short, the problems created by the mismatching brought on by affirmative action gave way to significant improvements in the academic performances of black and Hispanic students in the University of California system after those preferences were banned.