There is a way to change the default location - if the student goes on to their word, or PowerPoint, or excel they will need to go to their Options

once in the Options do the following: 

1. Click on Save
2. Check mark the box that says Save to Computer by default
3. Choose the location of the files you want it to be saved at
4. Then press ok, after that it should be good to go for all other applications.