A type of nonresidential, outpatient program based on a three phase levels system where offenders report for a variety of treatment programs, itinerary, and random drug testing is a:

A day reporting center fits the description given in the question as it serves as a nonresidential, outpatient program where offenders participate in a structured schedule of treatment, activities, and monitoring. These centers are designed to support individuals in successfully reintegrating into the community while providing oversight through regular reporting requirements.

Participants typically attend a variety of treatment programs, including substance abuse counseling, employment training, and educational workshops, which are critical for personal development and rehabilitation. Additionally, the emphasis on random drug testing is a key feature of day reporting centers, ensuring that offenders maintain accountability regarding substance use while they pursue their rehabilitation goals.

While work release centers, therapeutic centers, and community restitution centers each have distinct functions, they do not encapsulate the comprehensive, phased approach, outpatient nature, and requirement for regular reporting exemplified by day reporting centers.