Made a mistake on my app and reported the wrong grade!

[karenmill]

Hey everyone,

I need some advice about one of my applications. I applied to Brown's Modern Culture and Media program over the weekend. They ask for ALL* schools that you've attended (in bolded letters) so I wanted to be sure I included everything. I just graduated from a master's program at Duke, but before I got to Duke I took one course at Hunter College in New York as a part-time student in the Art History MA program. I honestly barely remember taking the course (it was a couple of years ago) and I don't have a transcript or evidence that I took the class. I added Hunter the Education section of the app, and attached a short paragraph where the transcript is supposed to go explaining why I took this course. I thought had received a B+ in the course so I wrote the letter grade in the description. I checked back after the fact and realized that I actually got a B minus. 

I'm honestly kicking myself today because I feel like I totally messed up this section of the app. I was surprised they wanted every* school so I didn't have the transcript ready or on hand from this one course. I can't believe I reported something incorrectly, and I'm worried this looks really sloppy. Does anyone have any advice on how to handle this? How bad will this look on my application? I have accurate transcripts for my master's degree and undergrad, and the rest of my app is totally fine. 

[AP]

Every application portal has a Help section with contact info, usually the school. Contact them and calmly tell them you typed the wrong grade.