I was a judge in a science competition, should I include that my resume I served as a judge in a science competition for high, middle and elementary school students. I am confused if I can put this activity in my resume. Also, I do not know in which section I need to include if I can put this on my resume. 
Thanks!
What is this resume for?

If it's for a job judging science competitions, put it on there.

If it's for a job herding goats in Peru, leave it off.

Anything in the middle, use your experience in judgement to decide if it's relevant.