Hello,
according to the Terms and Conditions given to EDU Licenses, it is only allowed to install the software on one computer (regardless of the fact that the Dongle permits using only 1 Computer at a time). That means literally, an EDU License (one) gets Support for one Computer. If you upgrade/update an EDU License, the limitations will be removed.
@stevebg Your Son can use your computer if he will be using only that Installation for which he could demand Technical Support. The previous installation on his laptop should be removed before.
Best Regards,