<p>They don’t care which test you submit, so long as you submit either the SAT or ACT. You could also submit both and they’ll take the highest of the two scores.</p>
<p>Switching majors is really easy. You just need to wait until winter quarter (you need a GPA) and get a couple signatures in most cases. In certain majors you’ll need to complete some prereqs before you can switch (engineering and psychology come immediately to mind, but there’s others), but once you fulfill those prereqs you can switch with no issues.</p>