My son goes to a small Catholic school and the only thing they have to filter web traffic is a server firewall (they use SonicWall). It does filter the majority of sites that the shouldn't go to but what it does not do is filter the descriptions the show up when you search something and it does not filter the images. If they ratchet it up a bit it will do a better job of filtering but then it prevents some drivers from updating,
I know there are third party filters like SmoothWall but I am wondering if there is a browser version that would be designed for schools prevent the content from even getting to the search page or images page. I have tried Google SafeSearch but it is marginal at best.
Any help would be much appreciated.