Ironically I was also 12 years old in 1961 and an altar boy.  I saw absolutely nothing that suggested sexual activity about the priests. I saw nothing or heard nothing. And I also heard nothing from anyone not in my parish. In the small town I grew up in, there was an issue of a  boy scout leader in the 1950's. I do not know the details because I was never told much, but it was resolved. There were a few men around that the common word was to be careful with at the time. They were single men in the community who had their own extended families. They were working class and had very limited mobility to leave the community. My father was the school principal of a middle school. I now realize that he had to deal with a "problem" unmarried 6th grade male tenured teacher.  I  did not ask anything about this, and I do not know how it ended.  These distant experiences have given me a sense of suspicion of unmarried men working with or teaching pubescent boys.