A supplement prompt ended up connecting very nicely with an event in my life that has greatly affected me and the way I connect with the world-- except I already wrote about it for my common app. If I come at it from a new angle, ultimately with a different message/takeaway, can I still write it in the supplement? Or will admissions officers see that as repetitious? (For context this is regarding Amherst College, except I can easily see myself running into the same problem w other supplements)
My S had same issue and we thought that if he wrote about the same thing, he might come across as one-sided. He ended up using his common app essay for that particular supplement and reworking a supplement from a different college app to be his common app essay for that college only. Good luck.
If you write about the same topic, it’s a missed opportunity. I agree with @Momma2018.