What do permanently excluded school children do in their spare?

I have never been excluded from School so i don't know. But i think the school should make sure they are given something to do. I came to this idea by watching Episode 2 of Series 2 Waterloo Road. The excluded ppl from that school changed to thugs and were committing crimes. The excluded ppl had form a gang to do this. This seems really possible to me when looking at an area with high exclusion rates in schools.