FYI, the school actually buys the physical rack mount server when they get lightspeed. I guess they come preloaded with a huge database of known blocked websites, and it's probably updated from time to time based on cumulative research from other customers, but the final configuration of what categories and what websites are blocked is up to the end user. It's not universal. Also, they run a proprietary OS which explains why filtering is so fast. I gotta admit they know what they're doing- the entire software suite is slick and very user friendly.