SAN FRANCISCO — In the wake of declining rankings in the all-important U.S. News & World Report, one California law school dean says the problem is not underperforming schools, but an underperforming state economy.

Tom Campbell, whose Chapman University School of Law has fallen from No. 104 in 2011 to No. 140 in the list released Monday, says the state’s poor employment prospects are a drag on the rankings at all 21 accredited California law schools. The rankings take into account the percentage of a school’s recent graduates that have found legal jobs—an awfully low number at some schools.