The 25th percentile ACT score is 30, and the 75th percentile ACT score is 34. In other words, a 30 places you below average, while a 34 will move you up to above average.There's no absolute ACT requirement at Cornell, but they really want to see at least a 30 to have a chance at being considered.o be safe, you should aim for the 75th percentile, with a 34 ACT and a 4.03 GPA or higher to be above average. This is only part of the challenge-after this, you'll need to impress them beyond your academic scores, with your accomplishments and extracurriculars.