Fair question. Teaching licenses allow multiple users, but they won't work from a server. This means that you have to give it to your students or department colleagues, and after downloading the required ChemAxon software, they have to install the license on their own machines.
Please note that only after downloading and installing a ChemAxon product will you be able to open the .cxl format license file.
I know this is a bit demanding way to share the license, but unfortunately we saw massive abuse of our licenses that provided server use as well. I truly hope you will understand us and also that this answer will be helpful.
Have a great day,