@happymomof1 Both matter. I asked about other math-sci activities, didn’t rate one sort above others.
I dont know if OP is paid, how many hours he’s really there. or what he does. But he says, " I dont have much to show in terms of projects, just confirmation from the head of the chemistry department." And, “…3 highschool students who just help out.”
The other ECs are likely fine. With the gpa and “2-3 Cs in CP classes” (other thread; no idea what courses,) and only the internship, USC sounds iffy.