What kind of High school pda?

So I just asked this girl last night to be my girlfriend. Now I have had girlfriends in the past, but it has been over summer so the high school pda was naturally easy. However, I got a girlfriend yesterday and I was wondering how high school "new" couples should act in public. I figured I would hold her hand, but other than that, I might just kiss her bye when we leave school. Is that too much or too little?