There are only a few more days until summer vacation is over for my kids and they head back to school.  Emily is getting ready to start middle school, so she’s excited about new clothes, getting a locker, and a new crop of boys to chase.  Ryan will be in the 4th grade and his excitement level is considerably lower than his sister’s. When the concept of summer vacation was first introduced in the US, it was so that kids could work on the farm all summer.  Certainly,…