If a law school can’t prepare three-quarters of its graduates who take the bar exam to pass, it shouldn’t exist.

That is the view of the American Bar Association’s accreditation council, which is renewing a push to toughen requirements in the face of historically low passage rates for attorney-licensing exams. The ABA group retreated from an earlier attempt after detractors said it would hurt schools with larger enrollments of minority students and those in states with more difficult exams.

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