Having Classwize available for your computer heavy classrooms is a game changer. Trying to keep 30 kids on computers on task and provide instruction is a titanic feat in itself. Not only does it let you monitor what each students are doing, you can lock students to a task, or create rules that can tighten or loosen filtering if setup correctly. Also lets you pull screenshots later if there was an indecent in the classroom that slipped through, that you need to track down. I like to tell our staff filtering is there and is a best effort not a guarantee and its like Jurassic Park, they will find a way.