Where I live in Canada, we have four classes each semester that are all 75 minutes each; so a duration of 1 hour and 15 minutes for each class. (High School) How long do your classes usually last?
Well since it's my last year of Dentistry classes are really sporadic. Some days we have lectures which are 3-4 hours, other days we have lab work which is usually 4-6 hours, and then frequently we do clinical work which is from 7 AM to 3 PM. And then there are some really horrible days where we have lectures AND lab work.
I'm loving all of the academic questions on ATRL tonight. A nice change to the usual catfights. Anyway, I have four classes a day (high school) and they are each 90 minutes.