[1] From its opening in 1976 through at least 1994, ADTC is a unique facility, the "only complex of its kind in the nation devoted exclusively to the treatment of adult sexual offenders".

Prior to the opening of the Avenel facility, the program occupied a housing unit at East Jersey State Prison known as "5-Wing".

Inmates are divided into "levels" and "phases" based on their therapeutic progress, institutional conduct and compliance, criminal history, outstanding warrants or detainers, and escape risk probability assessment.

Level 2, 3, and 4 inmates participate in various modules dealing with subjects such as Anger Management, Arousal Reconditioning, Victim Empathy, and Relapse Prevention, as well as more general "process groups" where any therapeutic issues can be discussed.

Inmates may also participate in groups run by para-professional therapy aides, which are videotaped for review by staff members and are limited to specific therapeutic issues.

Phase 2 corresponds to medium custody and allows inmates to hold jobs that don't require as much supervision, but are still within the confines of the secure perimeter.

NJDOC Inmates, who at the end of their sentences have been determined to be "Sexually Violent Predators", may be civilly committed to the Special Treatment Unit (STU).

During these furloughs they participate in drug/alcohol abuse classes, practice shopping for social skills education and relearning, look for employment, and stay in half-way houses when necessary.

The NJ Department of Corrections- ADTC Corrections Officers maintain the security of the facility and control the daily operations of the STU.