TeamViewer is a free, for non-commercial use, software, available for Windows, Mac, and Linux, that lets you remote control computers, stream presentations, and hold online meetings. There are also iOS and Android apps available.
This is a great option for schools looking to be able to remote control computers for tech support and help or hold online meetings/presentations/classes.
Related:
Splashtop Remote - remote control your computer, and access all of your files.
