Wendy,
I'm sorry difficult child isn't doing well in school.
I think a 5 day ISS is a bit much for a scuffle. However, it was good not to get involved. I ALSO think ISS is reinforcing to some kids because they are in a structured environment, and if motivated to "catch up," it's a great place to do it. Also, difficult child does not have to go to class. In this situation, I'm not sure it isn't a reinforcer.
Sigh....the only ISS easy child ever had (for smoking on school property) she had to go to Saturday school where she did the whole weekend's worth of homework by 11 AM and left feeling she had a good weekend ahead of her. All I said was--get up every Saturday at 7:00 AM and you can preserve the feeling.
She still smokes much to my distress.
Martie