Military school
Military school is a place your Children can go to in The Sims. This place only exists in The Sims.
What results the children going there
If your child's/children's grades stay at F for a very long time, eventully, your child will be taken away to the miltary school and you'll never see the child again. This cannot happen if the Social Worker has taken taken your child away already, as that can also happen if your child's grade's stay at F for a very long time.