The City of Norcross Police Department was first accredited in 1997. Administered by the Commission on Accreditation for Law Enforcement Agencies (CALEA), the accreditation program requires agencies to comply with 480 state-of-the-art standards in four basic areas: policy and procedures, administration, operations and support services.

Every three years, the department must undergo an on-site assessment as part of its effort to maintain its international accreditation. This process verifies that the department continues to meet specifically defined professional standards.

Agencies that display exceptional performance during their on-site evaluations are eligible to receive the CALEA Flagship Award. The Norcross Police Department was awarded Flagship status in 2007 and 2010.