Google, Bing and Yahoo support safe search on their respective search engines. A web filter will need to pro-actively enable these safety modes. We recommend enabling safety modes on these three search engines while keeping all other search engines (Ask, Duckduckgo, etc) blocked. The top three search engines give students more than enough freedom to research on their class assignments. Safety mode can be enabled by simply appending a string at the end of the URL, as shown here:
- Google: ?&safe=active
- Bing: ?& adlt=strict
- Yahoo: ?&vm=r
Systems such as Dan’s Guardian and Safe Squid can be used to accomplish the above. Chromebooks can have Google safe search turned on from the Google Apps for Education (GAfE) Admin Console.