Included with TSNC for schools
The TSNC Content Filter blocks websites by category — AI homework-cheating tools, social media, gaming, streaming, adult content and more — separately for students and staff, with per-site overrides you control. It’s already part of the same browser extension that protects your school from phishing.
Pick the categories that should be blocked for students and, independently, for staff. Add your own allow/deny exceptions any time — a teacher can even right-click a page and allow or block it for the whole school.
The TSNC extension uses Chrome’s built-in blocking to stop a blocked site before it loads and show a “Site blocked” page — instantly, with no slowdown, even while the browser is idle.
Blocking happens on the device — we never receive a student’s browsing history. It’s off by default and only turns on when an admin opts in and accepts the Content Filter agreement.
Because each person signs in with their school account, you can block a category for students while leaving staff free — or apply a lighter, “allowed with a warning” policy to staff.
Strongest setup
If your school runs managed Chromebooks through Google Admin, you can lock the filter down completely: force-install the extension so students can’t remove it, close the incognito loophole, and restrict sign-in to your school domain so a personal account can’t dodge it. That’s the “whole school is covered” scenario — and it takes about 15 minutes in the Admin Console.
Read the 15-minute setup guide →No web filter is magic. Here’s exactly where this one is strong and where it isn’t — so you can plan around it.
The honest answer: on managed Chromebooks you can fully lock it down; on personal/BYOD devices it’s strong but best-effort. We’d rather tell you that up front than oversell it.
The Content Filter comes with your school’s TSNC plan — the same extension that runs your phishing simulations and training. Turn it on when you’re ready.