The California Supreme Court said Wednesday it will appoint a working group to scrutinize the effectiveness of rules targeting discrimination in jury selection, an issue that has challenged and sometimes divided the seven justices in recent years.

In a statement, the court said Chief Justice Tani Cantil-Sakauye in the coming weeks will appoint “a diverse work group” of judges, prosecutors, defense counsel and other lawyers to consider possible changes to jury instructions and peremptory challenges.