Since you can't really make out with your girl at school, school's not really a fun place to see your girlfriend, so here's what you do:
1) Occasionally eat lunch with her at school.
2) Give her a little slice of your busy weekend to hang out and do more than hug.
This is good because you let her know that your life doesn't revolve around her, you let her and your friends that you usually hang out with at school during lunch know that you have your own mind, and you keep a good level of communication with your friends and your girlfriend at school.
Later,
DJBedford.