The purpose of the Institution is to provide remediation programs and services to youthful offenders, other eligible persons, and mentally ill incarcerated individuals including a range of program alternatives indicated by the current state of knowledge to be appropriate and effective for the population being served. The Institution shall establish and maintain, as an integral part of the programs, an effective research, development, and training effort to evaluate and recommend improvements on an ongoing basis. No more than 350 eligible persons may be enrolled in the eligible person remediation program. The Institution may provide other remediation programs that the Secretary designates.