We need to ensure a diverse student body - by making sure that smart kids of every race, class, and culture are given a thorough math education.
The K-12 public schools in California fail too many kids; and far too many poor, minority kids. Rather than fix this, we ban 8th grade algebra because we don't like the racial makeup of the advanced math track.
We can, in fact, have it both ways. But it will take change and be resisted by people who, ironically, claim to be helping the poor minorities most hurt today.