BERKELEY, Calif. (AP) -- Fifteen years ago, California became the first state to ban the consideration of race and ethnicity in public university admissions.

Since then, the state's most selective public colleges and graduate schools have struggled to assemble student bodies that reflect the state's demographic mix.

Universities around the country could soon face the same challenge.

The U.S. Supreme Court is set to revisit affirmative action less than a decade after it endorsed the use of race as a factor in college admissions.

College officials are worried today's more conservative court could limit or even ban affirmative action, a powerful tool for increasing campus diversity.

The effects of the landmark ban are evident at the University of California, Berkeley, where the student body is diverse but hardly resembles the state's racial makeup.