One of the only places student and teachers have a problem accessing the information they need is in schools. It used to be that the filters themselves were the main problem. Then CIPA came along and the problem was compounded by people using them poorly. Today, the filters have improved, but not the people. Filters are still being used poorly, if not worse. If filtering management and strategies had improved 1/10 as much as filters have improved, there would be no significant problem.
The ONLY thing CIPA requires in the way of technology is that you protect against accidental access to pornograhy, but too many schools use filters in lieu of supervision and education. The block everything from violence to nose picking. They are not protecting the children. They are trying to cover their collective asses and in the process are hindering education and access to the material that students and teachers need.