UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/603.1.30 (KHTML, like Gecko) Version/10.1 Safari/603.1.30

Steps to reproduce the problem:
1. Launch GoogleChrome
2. Click on the : goto more tools Select Extensions
3. Select get more Extensions
4.Select the Extensions then click add to chrome
5. Needs to block this path too https://chrome.google.com/webstore/category/extensions?hl=en-US

What is the expected behavior?
Needs to come up with a profile that will block students from adding extensions

What went wrong?
Because of this Students are bypassing the DOE network and we cannot manage them

WebStore page: 

Did this work before? N/A 

Chrome version: <Copy from: 'about:version'>  Channel: stable
OS Version: OS X 10.12.4
Flash Version: 

Even if you block them locally if the network users had some extensions associated with their account, those extensions will automatically get install when they log in.