I think that this depends on what the nature of the suspension is. I remember when I was in school, a suspension almost always meant an in-school suspension. You were sent to the library, or the principals office to serve your suspension, were given your class assignments and your books and were expected to complete them AND you punishement! If these were not done, you were given additional punishments.
Today, it seems that all suspensions are out of school, and work is not expected to be done. Essentially a mini-vacation for the kid.