* SAT/ACT scores: While not the sole determinant, strong scores are expected. Successful applicants generally score very highly, often in the 1500+ range (out of 1600) on the SAT. However, even high scores don't guarantee admission.
* GPA: A high GPA from a rigorous high school curriculum is crucial.
* Course rigor: The difficulty and number of challenging courses you've taken are heavily weighted. AP, IB, and honors courses are important.
* Extracurricular activities: Demonstrated leadership, commitment, and passion in extracurriculars are vital.
* Essays: Compelling essays that showcase your personality, experiences, and goals are essential.
* Letters of recommendation: Strong recommendations from teachers and counselors who know you well.
* Talent/unique skills: Exceptional achievements in specific fields (arts, athletics, etc.) can enhance your application.
In short, while a very high SAT score is beneficial and expected, it's just one piece of a much larger puzzle. Focusing solely on the SAT score is not a productive approach to applying to UPenn. A well-rounded application demonstrating academic excellence, significant extracurricular involvement, and personal qualities is far more important.