Do UC schools read the Common App. Essay?

Colleges and Universities A-Z University of California - GENERAL
1

Question in title.
I was wondering if the common app essay is read by the UC campuses, as they have their own application.

2

No why would they since you apply to the UC’s with the UC application not the common application.

3

I was confused, thank you.

4

How would they be able to see it?

5

magic