Do I have to fill out Common App?

<p>What is the Common App?
Is it required that I must fill one out?
I'm currently a senior at high school. Will graduate at 6/2012.
I will only be attending public universities in california (CSU/UC).</p>

<p>No, those schools only accept their own applications.</p>

<p>The common app is a universal application over 400 schools accept so a student only has to fill out the main application once and then do separate supplements for different schools. Similar to you filling out the UC application and checking off the boxes of the various UCs you want to apply to so all the UCs get your application.</p>