<p>I'm wondering how you can start taking upper division classes? I think it's about the number of units you've completed, but how many do you need to have upper division standing?</p>
<p>Anyone can sign up to take upper division classes, provided they have the prerequisites listed in the Course Catalog. If there are no prerequisite classes or requirements of junior standing, you can sign up any quarter. The catch, though, is that enrollment is done thru a priority system based on class level. Many smaller upper-division classes may be filled by the time enrollment for frosh rolls around.</p>
<p>u need 90 units to have UD standing (=junior)</p>