There are often 'silly rumours / dark humour and plain old teenage whispering about dodgy scout leaders, iffy teachers, flirty female leaders and slimy male leaders in youth organisations - and that's half the problem. MANY of those rumours are simply just untrue, which makes the relatively rare accurate accusation so harder to differentiate.
We can all wonder why rumours existed and yet nobody said anything, but I'm sure many will have overheard a buysnch of teenage boys talking about flirty teachers, or someone's mother - but we dismiss it as 'teenage boy chat'. When we hear about the older single male teacher being labelled as 'sad smelly Mr Smith', we do the same. So when it comes to 'pervy Mr Peters' that too often gets put down to silly rumour - and rightly so in MOST cases.
If every report of flirty female teachers, or creepy male teachers was reported, the system would grind to a halt, and some innocent people would forever be tainted.
It's terribly sad, but this fact of life helps to give the perpetrators a layer of protection.