Comment Dansgaurdian (Score 1) 678
I'm not sure what the development on this has been since 2006 but when I was an admin at a K-12 school we used this as our primary filter. It was very effective and simple to setup. When kids were legitimately researching topics on , say, human sexuality, etc. for various grade 10-12 courses it was no trouble to unblock specific sites or even whole domains.
