My class loooovvves to take vacations. They love it so much that I have had 4 students already take week long vacations. It's really starting to annoy me because when these kids return, they are totally lost. Our handbook states that parents should not expect teachers to prepare work ahead of time for kids who are on vacation. However, I always give them work at the parents request because I don't want the kids to fall too far behind. I'm starting to get tired of doing this. I guess it's my fault for accomodating them, but I did not anticipate 4 vacations by October. Can I even address this issue? I don't want to single people out but this is becoming a very bad habit with this class. Any advice?