I took a course called "Theatrical Collaboration" this past summer at Columbia, I don't think its part of the "summer theater institute" but it was an absolutely amazing experience nonetheless. It's a four week course where you work on acting, play-writing, directing, and improv and then workshop two original one-acts, have four public performances, and overall have a wonderful, wonderful learning experience. I loved it.
Not sure if that's what you're looking for but hope it helped!
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