Folder Sync Application

Okay, here's what I need...
I have an ongoing project for school that requires me to work on it both at home and in school. When I have finished working on the documents for the project in school I save them to a single folder on my USB flash drive. When I get home I need to continue working on the same files within that folder. Is there an application that will sync the folder on my memory stick with the one on my home laptop as soon I plug in the flash drive? Could I make this in Automator? Please help