A sloppy analogy without a lot of details that just popped into my brain, I think of it kinda like a military’s basic training camps/bases/postings.

You take a group of people and sequester them in a place where they’re under a fair amount of observation and sheepherding. A pretty set mandatory routine, ideological education, basic education, technical education, exercise, free time, meals, personal hygiene, sleep. As time passes and the opinions of the educators/trainers as well as any objective measures that could be developed would give the re-educated person the opportunity to move on to different areas where there are gradually less restrictions until it is decided that the folks can be allowed back into society. Transition and placement services for the “graduates” should exist to aid these new members of society.

Those that fail, can just stay in the system until they pass.

Those that refuse can just be kept in the system until they get tired of refusing or until they get to an age that it can be considered of little risk to allow them back into society.