That might depend from school to school then. In my high school the teachers wouldn't stop anything, as a matter of fact the juiciest gossips were about the teachers. As long as they weren't doing anything illegal and it didn't interfere with their work both what students or teachers did was mostly their business and the school didn't interfere. There were quite a few of teachers who were married and had gotten married having met there.

But I have no idea how education is in England so I go by what happened in my schooling, both in Brazil and Italy.

From what I can see the American schools are a huge part of the child’s social life. And maybe because of that the teachers reach not only in the students' school life but social life too. I don't know if I'm right or not, that is my perception from someone who bases my knowledge of American schooling on TV and the one year of College I attended there. I might be completely wrong.

In Brazil, as well as in Italy, school was just school, from eight to one and then you had the afternoon where you attended whatever extra activity you had and did your homework. There weren’t' clubs, and school related extra activity.  Your friends weren't  only confined to your friends from school since you also had many activities that had nothing to do with school, like English class, guitar lessons, ballet or whatever the child takes fancy too. And because of that as I said as long as it wasn't illegal or interfering with "productivity" their social lives were not the teachers business. I figured the English way of viewing school might be closer to the Italian, so I just went on with my own way.

I know, that since they are a boarding school they are more involved with the students then normally, but honestly those articles about their love-life weren't that damaging to require any dramatic action. There could have been extra attention because Harry was famous but I didn't see the need for that. I think that was a business for family to take care, not the school, and in Canon Harry has no family to sue the Prophet and here, well, there might have been one or another Howler from Sirius, but what could he do other than that in the Wizarding world system? The slander the prophet does next proves that there isn't much justice or truth printed in that paper and I kept it close to canon that way.

Thanks for reading and giving your input!