Which ECs should I include on the Common App?

<p>Here are my extra-curricular activities:</p>

<p>Yearbook Staff (9) (Head photographer)
Karate (9) (Purple belt)
Theater (9, 10) (involved in various productions)
Jr. volunteer organization 1 (outside of school) (9, 10, 11, 12) (Trustee, Prelate)
Piano (9, 10, 11, 12) (National Piano Guild)
Volunteer organization 2 (outside of school) (10, 11, 12) (Manager)
Family, Career, & Community Leaders of America (11)
Volunteer organization 3 (in school) (11, 12)
Newspaper Staff (11, 12) (Editor-in-chief)
Journalism Team (11, 12) (Main competitor)
Accounting Team (12)
Ready Writing Team (12)
DECA (12)</p>

<p>Which ones should I include on the application?</p>

<p>I was wondering something along the same lines as well. It may be a reading too in the lines question, but I was in some of my clubs for only a year just to see if I was interested in them or not. Because it says “principal extracurricular, volunteer, and work activities” on the common app’s activities section, I thought maybe that meant I didn’t have to include those one time clubs? </p>

<p>Does anyone know?</p>