What reality check should I do for this dream sign?

I just moved to another country and one of my dream signs is being back in school and seeing old friends. What reality checks should I do for these dream signs?

Try to consciously decide what obvious images are presented to you in your dream(s) that would be an obvious cue you were dreaming. places, people things from your old country.
Its frustrating when we miss the very bizarre combinations of dream scenes the brain gives us & we somehow still not realize we are dreaming.

before entering sleep, do some mental preparation - if you go to bed say to yourself
If I see old friends or my old school I will know that I am dreaming.
repeat it in your head as you fall asleep.

I like to use the Hand through Palm RC; One, because it works 99% of the time, and two, it's really cool to look at and feel. The Reality Check Tutorial has a bigger list.

It doesn't matter too much which RC you use. I just always do the nose plug one. I kinda know what you mean about school being a dreamsign. I've had so many dreams this summer where it was the first day of school, and I've just now begun to realize it during my dreams.

Thanks for the responses...when should i do the reality checks?