People in such positions (of control over minor children) need to be snow-white and completely unimpeachable. No way he should even have got himself into the position of ever even being suspected of something like this.
It simply can't remain secret given the gravity of the allegations - even if it were suspicion of theft, or murder, or any other felonious crime, it would be no different. "Arrested on suspicion of" anything, it is all done in the public domain, is it not? Why should this be any different?
The only important thing is if he's innocent or guilty. That will be decided in a court of law. Whether you, me or a tabloid rag suspect him is totally irrelevant. His name should be kept out of the public domain and only revealed if found guilty.
Personally, I believe all people charged with a crime should be anonymous till found guilty. It's ridiculous that your name, age and address can be revealed in the media.