[Grimnir]

compulsory national service from age 16-18 in place of college
you learn discipline, morals and values whilst studying equivalent of A-levels
from there you can stay in the army, go to university or go into work

high school 11-16, pupils expelled for behaviour such as violence, bullying, drugs and sent to military reform schools which are run in same way as the 16-18 age bracket

once you are 18 and you commit a serious crime such as robbery,mugging, murder, rape etc you get removed from society permanently by deportation to Antarctica where they can live however they like

of the prisons we have at present some would remain as prisons for minor criminals and some converted into reform schools