Good question. A good book is:
"Front of the Class; How Tourettes Made Me the Teacher I Never Had" by Brad Cohen. In his book he describes what it is like growing up and then trying to get a job. Very good book.
As for my own experience, my son has this disorder. He is 12 and it's tough for him. The most frustration comes from not being in control of your own body at all times. He has difficulty in school, as it simply takes him longer to do the work required of him. He's NOT dumb, retarded, or mentally ill. He is actually wicked smart! He just learns and processes differently than other kids. He has chores and homework, just like everybody else. He plays chess, is artistically gifted, and makes stop-motion animation movies on his iMac. He does have friends, but most other kids make fun of him or just ignore him.
His case is moderate, so he can take care of himself pretty well, just with a few extra movements and noises.
Tourettes is Neurological, or to be more specific, Neurobiological. Think of it this way: my sons' software is fine (his aptitude for learning and ability to function), but his hardware is wired incorrectly and this causes him to tic.
You can find more information about Tourettes here:
http://www.tsa.usa.org
http://www.geocities.com/Heartland/Woods/3395/TSIndex.html
http://www.freewebs.com/teenswts/documentarys.htm
This is a DVD you should present to your class! It will support your findings and it features kids describing their lives with TS:
http://www.tsa-usa.org/news/HBO_Release_apr06_update.htm
http://www.buildasitefactory.com/index.php?sid=37
Hope this helps.