Which agency audits law enforcement agencies for compliance with established standards?

The Office of Law Enforcement Standards (OLES) is primarily responsible for auditing law enforcement agencies to ensure they comply with established standards. This agency plays a crucial role in maintaining the integrity, effectiveness, and professionalism of law enforcement by developing and promoting standards that agencies should follow. OLES conducts assessments and evaluations to determine if agencies meet these criteria, which can include policies, procedures, training practices, and equipment standards.

While other agencies like the FBI and state law enforcement agencies also have oversight and regulatory functions, their primary focus may not be on auditing for compliance with general standards across all law enforcement agencies. The local sheriff's office, on the other hand, typically handles law enforcement on a more community and operational level rather than performing audits of other agencies. Therefore, OLES is the correct answer as it directly aligns with the role of auditing for compliance with established standards.