masked pedophile, how are parents and children going to tell which teachers can be trusted?
There are no easy solutions to this problem. Most likely, it has been with us for a very long time; the difference is they are more easily caught now.
Predators go where the prey are. Schools are particularly rich hunting grounds for these miscreants. New measures must be introduced even if they cannot completely eradicate these black sheep. Parents, especially of young children have not choice but be vigilant.