There are good sides and bad sides to both, I suppose. The extra study day, for some, can be a very useful opportunity to rest and catch up. The downside to that, I think, is that the parents still have to work regardless if their children are in school or not. I guess I have to say that I'm against that idea, because in the real workforce you don't get extra days off to relax and catch up (usually). It can save money, but to keep this generation of children from getting any more apathetic and lazy, we need to keep a consistent schedule through the workweek.
