I personally think the phrase should be amended if it is going to be used as a rule. EPDA, possibly. Explicit, or extensive PDA. As far as holding hands goes, there isn't anything disturbing about that. You shouldn't have been reprimanded.
I guess it also depends on what grade you're in.
In middle school some things can be understandable, since there are 6th graders around.
But in high school? getting reprimanded for holding hands is just stupid.
Girls in the lowest year of my high school are bragging about sucking people off already. I certainly hope it isn't true. PDA all you want, so long as it doesn't come into hindering your education. When things get too full on - groping and onwards - then that's where it comes to a halt. Nobody needs to see you shag your girl, save it for the bedroom.
What I find worse is people like said girls at such a young age being proud of shagging kids, it's twisted.
It's disgusting, honestly... 14 or 15 year old girls sucking guys off is wrong. There are so many "sluts" in my school it's getting out of hand. This PDA thing was really started to stop teen pregnancies, and kids having sex under-age. It got way out of hand when they started implementing these rules like no holding hands or hugging. Also, the girls being proud of having sex, that is just messed up.