Mine is the Fort Starch Military School. My sim came home with 4 handiness skill, which was used to repair up my by-then poor family's shattered house, because of lack of money to replace them or call a repairman.
I usually combine boarding schools with after-school classes of community school. For example, signing up for ballet as a child for athletic skill, then joining the arts boarding school (forgot the name

) for painting or music skills. The finished product is an athletic sim which is self sufficient and can support a large family by him/herself.
