I was applying to USC and it asked for your test history. I took both the SAT and ACT, but did better on the SAT. So I only told them I took the SAT and clicked that I never took the ACT because I did not want to give in my scores for that ACT. I was confused because I thought that they just want all of the SAT OR all of the ACT. But then I started thinking I should have clicked yes, that I did take it.
To sum up what I just wrote : can colleges tell if you took the ACT?