Step 1
Sign in to your Office 365 account using your school email address.
Step 2
On the top right corner, click on your name and in the dropdown menu click on my account.
Step 3
In the opened window, click on view apps and devices
Step 4
Click on install skype
Step 5
Once the app has been downloaded, you can find the file in your downloads folder. Double click on the file and install it