Help! I made a grave mistake on my common app!

Truust
Sun, 13 Oct 2013 14:33:20 +0000

I’m just a highschool student but…

I think it would be a good idea to call. Better safe than sorry. I doubt calling and explaining what happened will have any major negative impact on your application whatsoever. Besides, if they feel like 20 weeks is a lot for a certain activity in context, then they might get suspicious of your other activities. Calling can prevent that.