Did you try the microfocus.com website?
If you go to www.microfocus.com and type "visual cobol pe" in the search bar the first link that comes up is:
You can download the Visual COBOL PE product from that link.
A Visual Studio 2017 product will have to be downloaded and installed prior to installing Visual COBOL PE into it.
Since this is for education purposes you can download the Visual Studio 2017 Community Edition here, otherwise you will need to purchase a fully licensed copy from Microsoft.
I found the link now.
Before I download and install : it says "Visual COBOL for Visual Studio Personal Edition".
===> Will it work with another edition of VS2017??? (not the personal edition)