Perfect ACT but poor essay vs. Highish SAT and mediocre essay

rainbyul
Thu, 27 Apr 2017 02:37:40 +0000

The title is pretty self explanatory, but I got a perfect composite ACT and a 6/12 on the essay.
In comparison, I got a 1540 on the SAT and 15/24 on the essay.

If I were to send a score, should I send the ACT, the SAT, or both? I’m going to be a STEM major, but which option would be most beneficial for me to do? Thank you!