A city program for 560 low-level juvenile delinquents experienced “pervasive mismanagement” — even though it cost taxpayers $85,000 a year per child, a report says.

The report, released Thurs­day by city Comptroller Scott Stringer, took the Administration for Children’s Services to task.

Deputy ACS Commissioner Jill Krauss said the agency has “added experienced staff to monitor the safety of programs.”