I'm not saying that her video essay was great, but she made more coherent reasons to admit her in it than she did in the stage version marching band version. In the movie, it's apparent that her GPA, LSAT score, and extracurricular activities are pretty much why the board admits her. In the musical, some of the board only want to admit her because she's attractive. They just say "For reasons of... multiculturalism!", which is a pretty funny moment in the movie that the musical also manages to ruin by taking out important context and rephrasing it in a way that doesn't really convey what it should (in the movie, they're bringing up that they've never had a fashion major before and it would promote diversity). Also, without an essay at all, her application would be considered incomplete and thrown out before it was even reviewed. The video essay isn't realistic, I agree, but it's more realistic than the lack of essay in general. Then again, the musical expects us to believe that they would know when and where the admissions committee was meeting. I just don't see why the marching band scene was necessary when they could have staged the video.
I also want to point out my annoyance at the character of Kate, who apparently walks around with the Harvard Law School admissions standards memorized. IMO, that's yet another thing that they took away from Elle, because in the movie she was the one to voluntarily meet with an academic advisor and find out the requirements herself.
Jimmy, what are you doing here in the middle of the night? It's almost 9 PM!