Hello!
Per the Education Community Serial Number FAQ:
You shall not install more than one copy of any release version of any Software product obtained on this site on more than one system at a time. For example, a faculty member has a desktop computer at home and a laptop computer she uses at work. That faculty member cannot install a copy of AutoCAD 2014 on both the desktop and laptop systems simultaneously. She can, however, install AutoCAD 2013 on the desktop system and AutoCAD 2014 on the laptop system simultaneously.
Here to help if additional clarification is needed, otherwise please accept as a solution so that others can benefit from this information.