Ok…so basically dream signs are supposed to be something you see or notice that triggers you to do RC right?
Well I’ve been going through my dream journal and I’ve noticed that I’m continuosly dreaming that I’m in school. I’m still on vacation so…
Well what I want to know is should I make school my main dream sign???..it’s hard to integrate RC with school IRL because I hardly ever see anything during the day that have anything to do with school, what should I do?
Start by doing RC’s everytime you find yourself thinking about your school (Start now ^^), and you summer vacation is not for so much longer, is it?
No I don’t have that long left 
I’ve only got exactly one month left…then it’s back to school…
Yeah, once you think about school do an RC.
I too have noticed that I’ve frequently been dreaming of school. My school starts tomorrow, so it is probably just apprehension of it, but it is very starnge.
If you think school is a good dream sign than make it your dream sign. What’s the worst that could happen? If your wrong you might jump out a window in real life, is that so bad? 
I also have many Dreams of school, matter of fact I’d say 80% of my Lucid Dreams have been at my old school. I’ll usually realize that I don’t go to that school anymore… and Wala I’m Lucid.