I skip pretty often. It depends on my workload, if I absolutely must go to class to work on something, I will. However, if I have nothing to do in the class, or have nothing that isn't due anytime soon, I usually can be found in the library, caf, or forest smoking up near my school.

EDIT: To give you a clearer picture, here are the abscences on my last report card~

History - Ten abscences
Latin - Nine abscences
Lunch~
Math - Twenty abscences
English - Twenty-nine abscences.

My English teacher didn't know who I was for awhile.