How long has this been going on?

My grandfather left home at age 13 because his parents would not let him go to high school.  He went to a Catholic boarding school in Wisconsin, where he worked his way through high school (kitchen, grounds-keeping, etc.).  He told me - thirty years ago - that he had been molested by a priest there, and that his chronic deafness in one ear was from a blow to the head by another priest there. That he would talk about it, seventy years after it happened, testifies to its impact.