Back when I was in school I was reading Practical Common Lisp online during study hall until they blocked it (I can't remember the category-might have been education.) Over the next few days they kept tweaking the filter settings and all kinds of sites (NYT, etc) where blocked. It was amusing but they did categorically block proxies so it was difficult to circumvent. Got me interested enough to read our acceptable use policy which banned the downloading of anything at all (presumably including HTML.)

That wasn't the worst use of tech though. We also used a service called Turnitin which purported to find the plagiarism percentage of submitted papers. Of course it couldn't understand the difference between stealing and quoting and would flag very small sentence fragments including idioms. The fix was that we had to submit papers that where "no more than 3% plagiarized"