Hmmm, I think the school day is a little bit shorter on average, a six lesson day runs from 7:10 or so until about 12:50, at my school in the US you are in class for between 7 and 7.5 hours a day, here you have 3 days of 5 hours of classes, and two of almost 7. So yeah I guess that is true, but the girl that lives on the second floor of my house (not a member of my host family, I live in a condo like arrangement) has one day with 10 classes, so she probably goes to school for about as long as people at my school in the US.